OpenAI
OpenAI has 80 models in Epoch AI's notable models list, 40 of them released since January 2025; the largest training run with a compute estimate is GPT-6 Astra, at 9.4e26 FLOP. Its published safety framework is the Preparedness Framework, and 22 of its 30 indexed releases since January 2025 had a safety card on the day of release.
- 9.4e26 FLOP largest training run, GPT-6 Astra, 2026 Notable AI Models Epoch AI Inclusion is editorial ("notability criteria"), not exhaustive. Compute figures are frequently estimates; check the per-row confidence and notes columns before treating any value as measured. Cite Epoch AI, "Notable AI Models". https://epoch.ai/data/ai-models. Retrieved 28 October 2026 via AI Safety Tracker, https://aisafetytracker.org/developers/openai/.
- 40 notable models released since January 2025
- 22 of 30 releases since January 2025 with a system card on the day Release Safety Disclosure Index This site Our own reading of the system card, model card or safety report each developer published for each release Epoch AI lists from 2025, joined to Epoch's list. Every cell is what a developer says about its own model under its own framework: whether a card came out with the release, whether it reports dangerous-capability results, which government institutes it names as pre-release testers, and whether it says a risk threshold was reached. None of it is verified. A release Epoch adds after the last review is shown as awaiting review. Cite AI Safety Tracker, "Release Safety Disclosure Index". https://aisafetytracker.org/alignment/#releases. Retrieved 18 October 2026. Notable AI Models Epoch AI Inclusion is editorial ("notability criteria"), not exhaustive. Compute figures are frequently estimates; check the per-row confidence and notes columns before treating any value as measured. Cite Epoch AI, "Notable AI Models". https://epoch.ai/data/ai-models. Retrieved 18 October 2026 via AI Safety Tracker, https://aisafetytracker.org/developers/openai/.
- 0 sites it owns in Epoch's data-centre hub, and 21 where it is a named user
Models
Every model Epoch AI judges notable from OpenAI, by year, with the largest training run each year where Epoch has a compute estimate.
| Year | Models | Models, relative | Largest run that year |
|---|---|---|---|
| 2016 | 1 | - | |
| 2017 | 1 | OpenAI TI7 DOTA 1v1, 6.0e20 FLOP | |
| 2018 | 1 | GPT-1, 1.8e19 FLOP | |
| 2019 | 4 | OpenAI Five, 6.7e22 FLOP | |
| 2020 | 2 | GPT-3 175B (davinci), 3.1e23 FLOP | |
| 2021 | 5 | Codex, 7.3e22 FLOP | |
| 2022 | 7 | GPT-3.5 (davinci-002), 2.6e24 FLOP | |
| 2023 | 7 | GPT-4 (Mar 2023), 2.1e25 FLOP | |
| 2024 | 11 | - | |
| 2025 | 21 | GPT-4.5, 3.8e26 FLOP | |
| 2026 | 19 | GPT-6 Astra, 9.4e26 FLOP |
Most recent
| Published | Model | Domain | Released as | Training compute |
|---|---|---|---|---|
| 2026-09-29 | GPT-6.1 Sol | Multimodal | API only | - |
| 2026-09-22 | GPT-6 Sol | Multimodal | API only | - |
| 2026-09-22 | GPT-6 Luna Decisions | Language | API only | - |
| 2026-09-22 | GPT-6 Luna | Multimodal | API only | - |
| 2026-09-08 | GPT-Image-2.5 Sunburst | Image generation | API only | - |
| 2026-09-08 | GPT-Image-2.5 Flare | Image generation | API only | - |
| 2026-09-08 | ChatGPT Images 2.5 | Image generation | API only | - |
| 2026-09-03 | GPT-6 Astra | Multimodal | API only | 9.4e26 |
| 2026-08-11 | GPT-5.6 Cyber | Cybersecurity | API only | - |
| 2026-05-07 | GPT-5.5 Cyber | Cybersecurity | Unreleased | - |
Earlier models 70
| Published | Model | Domain | Released as | Training compute |
|---|---|---|---|---|
| 2026-05-05 | GPT-5.5 Instant | Multimodal | API only | - |
| 2026-04-23 | GPT-5.5 Pro | Multimodal | API only | - |
| 2026-04-23 | GPT-5.5 | Multimodal | API only | - |
| 2026-04-21 | GPT Image 2 | Image generation | API only | - |
| 2026-04-14 | GPT-5.4-Cyber | Cybersecurity | Other | - |
| 2026-03-05 | GPT-5.4 Pro | Multimodal | API only | - |
| 2026-03-05 | GPT-5.4 | Multimodal | API only | - |
| 2026-02-12 | GPT-5.3-Codex-Spark | Language | API only | - |
| 2026-02-05 | GPT-5.3 Codex | Language | API only | - |
| 2025-12-18 | GPT-5.2 Codex | Language | API only | - |
| 2025-12-11 | GPT-5.2 Pro | Multimodal | API only | - |
| 2025-12-11 | GPT-5.2 | - | API only | - |
| 2025-11-19 | GPT-5.1-Codex-Max | Language | API only | - |
| 2025-11-13 | GPT-5.1 Instant | Multimodal | API only | - |
| 2025-11-13 | GPT-5.1 | Multimodal | API only | - |
| 2025-11-12 | GPT-5.1-Codex | Language | API only | - |
| 2025-10-07 | GPT-5 Pro | Multimodal | API only | - |
| 2025-09-30 | Sora 2.0 | Video | API only | - |
| 2025-08-07 | GPT-5 nano | Multimodal | API only | - |
| 2025-08-07 | GPT-5 mini | Multimodal | API only | - |
| 2025-08-07 | GPT-5 | Multimodal | API only | 6.6e25 |
| 2025-08-05 | gpt-oss-120b | Language | Open weights | 4.9e24 |
| 2025-08-05 | gpt-oss-20b | Language | Open weights | 5.5e23 |
| 2025-04-23 | gpt-image-1 | Image generation | API only | - |
| 2025-03-27 | GPT-4o (Mar 2025) | Multimodal | API only | - |
| 2025-03-19 | o1-pro | Language | API only | - |
| 2025-02-27 | GPT-4.5 | Language | API only | 3.8e26 |
| 2025-01-31 | o3-mini | Language | API only | - |
| 2025-01-29 | GPT-4o (Jan 2025) | Multimodal | API only | - |
| 2025-01-23 | Computer-Using Agent (CUA) | Vision | API only | - |
| 2024-12-20 | o3 | Language | API only | - |
| 2024-12-09 | Sora Turbo | Video | API only | - |
| 2024-12-05 | o1 | Language | API only | - |
| 2024-11-20 | GPT-4o (Nov 2024) | Multimodal | API only | - |
| 2024-09-12 | o1-preview | Language | API only | - |
| 2024-09-12 | o1-mini | Language | API only | - |
| 2024-08-06 | GPT-4o (Aug 2024) | Multimodal | API only | - |
| 2024-07-18 | GPT-4o mini | Language | API only | - |
| 2024-05-13 | GPT-4o | Multimodal | API only | - |
| 2024-04-09 | GPT-4 Turbo (Apr 2024) | Multimodal | API only | - |
| 2024-02-15 | Sora | Video | API only | - |
| 2023-11-06 | GPT-4 Turbo (Nov 2023) | Multimodal | API only | - |
| 2023-10-19 | DALL·E 3 | Image generation | API only | - |
| 2023-09-28 | GPT-3.5 Turbo Instruct | Language | API only | - |
| 2023-09-25 | GPT-4V | Multimodal | API only | - |
| 2023-06-13 | GPT-4 (Jun 2023) | Multimodal | API only | 2.1e25 |
| 2023-06-13 | GPT-3.5 Turbo | Language | API only | - |
| 2023-03-15 | GPT-4 (Mar 2023) | Multimodal | API only | 2.1e25 |
| 2022-09-21 | Whisper | Speech | Open weights | 4.2e21 |
| 2022-04-06 | DALL·E 2 | Image generation | API only | 3.4e23 |
| 2022-03-15 | GPT-3.5 (davinci-002) | Language | API only | 2.6e24 |
| 2022-03-02 | Statement Curriculum Learning | Language | API only | 1.8e22 |
| 2022-01-27 | InstructGPT 175B | Language | API only | 3.2e23 |
| 2022-01-27 | InstructGPT 6B | Language | API only | - |
| 2022-01-27 | InstructGPT 1.3B | Language | API only | - |
| 2021-07-07 | Codex | Language | API only | 7.3e22 |
| 2021-05-11 | ADM | Image generation | Open weights | 6.2e21 |
| 2021-01-05 | DALL-E | Image generation | API only | 4.7e22 |
| 2021-01-05 | CLIP (ViT L/14@336px) | Multimodal | Open weights | 1.0e22 |
| 2021-01-05 | CLIP (ResNet-50) | Multimodal | Open weights | - |
| 2020-05-28 | GPT-3 175B (davinci) | Language | API only | 3.1e23 |
| 2020-04-27 | Go-explore | Games | Unreleased | - |
| 2019-12-13 | OpenAI Five Rerun | Games | Unreleased | 1.3e22 |
| 2019-12-13 | OpenAI Five | Games | Unreleased | 6.7e22 |
| 2019-04-25 | MuseNet | Audio | Unreleased | 2.2e20 |
| 2019-02-14 | GPT-2 (1.5B) | Language | Open weights | 1.9e21 |
| 2018-06-01 | GPT-1 | Language | Open weights | 1.8e19 |
| 2017-08-11 | OpenAI TI7 DOTA 1v1 | Games | Not recorded | 6.0e20 |
| 2016-12-05 | GAN-Advancer | Vision | Unreleased | - |
| 2014-12-22 | ADAM (CIFAR-10) | Vision | Unreleased | 6.2e14 |
Notability is Epoch's editorial judgement, and compute figures are its estimates, most of them not disclosed by the developer. Notable AI Models Epoch AI Inclusion is editorial ("notability criteria"), not exhaustive. Compute figures are frequently estimates; check the per-row confidence and notes columns before treating any value as measured. Cite Epoch AI, "Notable AI Models". https://epoch.ai/data/ai-models. Retrieved 28 October 2026 via AI Safety Tracker, https://aisafetytracker.org/developers/openai/. Notable AI Models Epoch AI Inclusion is editorial ("notability criteria"), not exhaustive. Compute figures are frequently estimates; check the per-row confidence and notes columns before treating any value as measured. Cite Epoch AI, "Notable AI Models". https://epoch.ai/data/ai-models. Retrieved 28 October 2026 via AI Safety Tracker, https://aisafetytracker.org/developers/openai/.
Safety framework and release disclosures
The frontier safety framework OpenAI has published, and what it published at each release since January 2025.
- Framework
- Preparedness Framework since 2023
- Its own scale
- Capability thresholds: High and Critical
- Risk domains
- CBRN, cyber, AI R&D
- External evaluation
- committed to
- Commits to stop
- yes: Commits to not deploying, or not continuing, until mitigations are in place.
Version 2, April 2025, is still the published version. OpenAI's Frontier Governance Framework of May 2026 sets out how it meets EU and Californian law and leaves this as its own standard. Three tracked categories at two thresholds: persuasion was dropped in 2025, and long-range autonomy and nuclear risk are research categories without thresholds. At a Critical threshold it commits to halt further development until safeguards are specified.
- 22 of 30 with a system card on the day
- 8 that no card names
- 4 naming a government institute that tested before release
- 18 stated to have reached a threshold in its own framework
| Released | Model | Card | Results | Government tested | Threshold |
|---|---|---|---|---|---|
| 2026-09-29 | GPT-6.1 Sol | at release | results | none named | reached Treated as Critical in cybersecurity and High in biological and chemical |
| 2026-09-22 | GPT-6 Sol Covered by an appendix added to the GPT-6 Astra card on its release day. | at release | results | none named | reached Treated as High in cybersecurity and in biological and chemical |
| 2026-09-22 | GPT-6 Luna Decisions Served through the Decisions API, built on GPT-6 Luna. No card names it. | none | - | - | - |
| 2026-09-22 | GPT-6 Luna Covered by an appendix added to the GPT-6 Astra card on its release day. | at release | results | none named | reached Treated as High in cybersecurity and in biological and chemical |
| 2026-09-03 | GPT-6 Astra | at release | results | UK AISI | reached Critical in cybersecurity; High in biological and chemical |
| 2026-08-11 | GPT-5.6 Cyber Released through OpenAI's Daybreak cyber defence programme. No card names it. | none | - | - | - |
| 2026-05-05 | GPT-5.5 Instant | at release | results | none named | reached Treated as High in cybersecurity and in biological and chemical |
| 2026-04-23 | GPT-5.5 Pro | at release | another model's | none named | reached Treated as High in biological and chemical and in cybersecurity |
| 2026-04-23 | GPT-5.5 | at release | results | US CAISI, UK AISI | reached Treated as High in biological and chemical and in cybersecurity; below Critical |
| 2026-04-14 | GPT-5.4-Cyber Released to vetted defenders through OpenAI's Trusted Access for Cyber programme. No card names it. | none | - | - | - |
Earlier releases 20
| Released | Model | Card | Results | Government tested | Threshold |
|---|---|---|---|---|---|
| 2026-03-05 | GPT-5.4 Pro The linked GPT-5.4 Thinking card does not name GPT-5.4 Pro. | none | - | - | - |
| 2026-03-05 | GPT-5.4 | at release | results | none named | reached Treated as High in biological and chemical and in cybersecurity |
| 2026-02-12 | GPT-5.3-Codex-Spark A research preview. No card names it. | none | - | - | - |
| 2026-02-05 | GPT-5.3 Codex | at release | results | US CAISI, UK AISI | reached Treated as High in biology and, as a precaution, in cybersecurity |
| 2025-12-18 | GPT-5.2 Codex | at release | results | none named | reached Treated as High in biology; below High in cybersecurity |
| 2025-12-11 | GPT-5.2 Pro The linked GPT-5.2 card covers GPT-5.2 Instant and GPT-5.2 Thinking and does not name GPT-5.2 Pro. | none | - | - | - |
| 2025-12-11 | GPT-5.2 | at release | results | none named | reached Treated as High in biological and chemical |
| 2025-11-19 | GPT-5.1-Codex-Max | at release | results | none named | reached Treated as High in biology; below High in cybersecurity |
| 2025-11-13 | GPT-5.1 Instant | at release | summary only | none named | reached Treated as High in biological and chemical, as GPT-5 was |
| 2025-11-13 | GPT-5.1 | at release | summary only | none named | reached Treated as High in biological and chemical, as GPT-5 was |
| 2025-11-12 | GPT-5.1-Codex No card names it. The GPT-5.1-Codex-Max card of the following week uses it as a baseline. | none | - | - | - |
| 2025-10-07 | GPT-5 Pro The GPT-5 card, published two months before the API release, names it as gpt-5-thinking-pro. | at release | another model's | none named | reached Treated as High in biological and chemical, as part of the GPT-5 launch |
| 2025-08-07 | GPT-5 nano | at release | another model's | none named | reached Treated as High in biological and chemical, as part of the GPT-5 launch |
| 2025-08-07 | GPT-5 mini | at release | results | none named | reached Treated as High in biological and chemical, as part of the GPT-5 launch |
| 2025-08-07 | GPT-5 | at release | results | US CAISI, UK AISI | reached Treated as High in biological and chemical |
| 2025-08-05 | gpt-oss-20b | at release | results | none named | below Below High in every tracked category, including after adversarial fine-tuning |
| 2025-08-05 | gpt-oss-120b | at release | results | none named | below Below High in every tracked category, including after adversarial fine-tuning |
| 2025-03-19 | o1-pro The linked o1 system card of December 2024 does not name o1-pro, and no card accompanied its API release. | none | - | - | - |
| 2025-02-27 | GPT-4.5 | at release | results | none named | below Medium risk overall |
| 2025-01-31 | o3-mini | at release | results | none named | below Medium risk overall before mitigations |
Every entry is OpenAI's own statement about its own models under its own framework. The rules behind each column are on the alignment page. Frontier Safety Framework Index This site Our own reading of each developer's published safety framework and model cards. Every field is what the developer says about itself: these are self-assessments under self-written frameworks with no common scale and no external audit, and they are indexed here for exactly that reason. Not a ranking, and not a verification. Cite AI Safety Tracker, "Frontier Safety Framework Index". https://aisafetytracker.org/alignment/#frameworks. Retrieved 18 October 2026. Release Safety Disclosure Index This site Our own reading of the system card, model card or safety report each developer published for each release Epoch AI lists from 2025, joined to Epoch's list. Every cell is what a developer says about its own model under its own framework: whether a card came out with the release, whether it reports dangerous-capability results, which government institutes it names as pre-release testers, and whether it says a risk threshold was reached. None of it is verified. A release Epoch adds after the last review is shown as awaiting review. Cite AI Safety Tracker, "Release Safety Disclosure Index". https://aisafetytracker.org/alignment/#releases. Retrieved 18 October 2026. Notable AI Models Epoch AI Inclusion is editorial ("notability criteria"), not exhaustive. Compute figures are frequently estimates; check the per-row confidence and notes columns before treating any value as measured. Cite Epoch AI, "Notable AI Models". https://epoch.ai/data/ai-models. Retrieved 18 October 2026 via AI Safety Tracker, https://aisafetytracker.org/developers/openai/.
Its models against the compute thresholds
How many of OpenAI's models with a compute estimate sit at or above each training-compute threshold written into an instrument, and the first to cross it.
| Instrument | Threshold | Status | Its models above | First of them to cross |
|---|---|---|---|---|
| Regulation (EU) 2024/1689, Article 51(2) European Union | 1e25 | in force | 5 | GPT-4 (Mar 2023), 2023-03-15 |
| SB 53, Transparency in Frontier Artificial Intelligence Act United States (California) | 1e26 | in force | 2 | GPT-4.5, 2025-02-27 |
| Enforcement Decree of the AI Basic Act, Article 23 South Korea | 1e26 | in force | 2 | GPT-4.5, 2025-02-27 |
| Executive Order 14110, section 4.2 United States (federal) | 1e26 | revoked | 2 | GPT-4.5, 2025-02-27 |
| SB 1047, Safe and Secure Innovation for Frontier AI Models Act United States (California) | 1e26 | vetoed | 2 | GPT-4.5, 2025-02-27 |
| RAISE Act, Responsible AI Safety and Education Act United States (New York) | 1e26 | enacted | 2 | GPT-4.5, 2025-02-27 |
Arithmetic on Epoch's compute estimates against the number in each instrument, not a legal finding about any model. The full timeline is on the capability page. Compute Threshold Index This site Training-compute thresholds written into law, executive action or published policy, with the text that sets each one. Whether a given model crosses a threshold here is arithmetic on Epoch's compute estimates, most of which are estimates rather than disclosures, and is not a legal finding about any model or developer. Cite AI Safety Tracker, "Compute Threshold Index". https://aisafetytracker.org/capability/#thresholds. Retrieved 23 October 2026. Notable AI Models Epoch AI Inclusion is editorial ("notability criteria"), not exhaustive. Compute figures are frequently estimates; check the per-row confidence and notes columns before treating any value as measured. Cite Epoch AI, "Notable AI Models". https://epoch.ai/data/ai-models. Retrieved 23 October 2026 via AI Safety Tracker, https://aisafetytracker.org/developers/openai/.
Datacentres
Sites in Epoch AI's data-centre hub that OpenAI owns or is named as using, largest planned IT power first.
| Site | Role | Country | Stage | IT power now | Planned |
|---|---|---|---|---|---|
| Microsoft Fairwater Wisconsin | named user, likely | United States | Expanding | 369 MW | 2.3 GW |
| OpenAI Stargate New Mexico | named user, confident | United States | Under construction | - | 1.8 GW |
| OpenAI Stargate Shackelford | named user, confident | United States | Under construction | - | 1.4 GW |
| OpenAI Stargate UAE | named user, confident | United Arab Emirates | Under construction | - | 1.0 GW |
| OpenAI Stargate Michigan | named user, confident | United States | Under construction | - | 988 MW |
| OpenAI Stargate Wisconsin | named user, confident | United States | Under construction | - | 902 MW |
| OpenAI Stargate Milam | named user, confident | United States | Under construction | - | 857 MW |
| OpenAI Stargate Abilene | named user, confident | United States | Expanding | 421 MW | 843 MW |
| Microsoft Fairwater Atlanta | named user, likely | United States | Operating | 636 MW | 636 MW |
| Coreweave Helios | named user, speculative | United States | Expanding | 132 MW | 528 MW |
| CoreWeave Ellendale ND | named user, speculative | United States | Expanding | 68 MW | 400 MW |
| CoreWeave Denton TX | named user, likely | United States | Expanding | 262 MW | 282 MW |
| OpenAI Stargate Lordstown | named user, confident | United States | Under construction | - | 214 MW |
| Microsoft Goodyear | named user, likely | United States | Operating | 202 MW | 202 MW |
| Microsoft Project Osmium | named user, speculative | United States | Operating | 190 MW | 190 MW |
| CoreWeave Muskogee OK | named user, speculative | United States | Under construction | - | 153 MW |
| CoreWeave Chester VA | named user, speculative | United States | Expanding | 82 MW | 113 MW |
| CoreWeave Lancaster Greenfield site | named user, speculative | United States | Under construction | - | 92 MW |
| CoreWeave Marble NC | named user, speculative | United States | Operating | 65 MW | 65 MW |
| CoreWeave Norway | named user, speculative | Norway | Operating | 42 MW | 42 MW |
| CoreWeave Dalton 1 & 2 | named user, speculative | United States | Operating | 28 MW | 28 MW |
Also named as tenant at NEXTDC S7 Sydney (proposed, non-binding memorandum of understanding, December 2025), from the developers' statements in the AI Datacentre Index.
Power is Epoch's estimate from imagery and permits, IT power where it states one. Confidence is Epoch's own label for each owner or user. AI Data Centers Epoch AI The largest AI sites Epoch has found, mostly in the United States. Epoch estimated in September 2026 that they hold 44% of the world's deployed AI compute, with a 90% interval of 23% to 81%. Power, compute and cost are Epoch's estimates from satellite imagery, permits and company statements; four in five IT power estimates fall within a factor of 1.4 of the true value. The owner is the owner of the chips, not necessarily of the building. Capacity after the date of retrieval is Epoch's projection. Coordinates are read from the hub's map page, which publishes them; the downloads do not. Cite Epoch AI, "AI Data Centers". https://epoch.ai/data/ai-data-centers. Retrieved 28 October 2026 via AI Safety Tracker, https://aisafetytracker.org/developers/openai/. AI Datacentre Index This site AI datacentre sites that Epoch AI's hub does not hold, recorded from the statements of developers, named tenants and planning authorities. Australia only so far. A site is included only where a primary source says it is built for AI compute or names the AI deployment inside it. Capacity is as the developer states it, IT or facility power as labelled, and is not an estimate; most of it is proposed and not yet approved. Coordinates are this site's placement of each stated address or area. Cite AI Safety Tracker, "AI Datacentre Index". https://aisafetytracker.org/datacentres/#added. Retrieved 28 October 2026.
Energy and emissions
What OpenAI has published about the energy behind its models, and what permits and press reporting add.
- Training energy or emissions Not disclosed
- No energy or emissions figure for any model.
- Where it trains and serves Published
- Stargate sites built with Oracle and SoftBank. The first, at Abilene, Texas, runs on Oracle Cloud Infrastructure. OpenAI
- What powers those sites Reported by others
- Permits filed for on-site natural-gas turbines at the Abilene campus. OpenAI publishes no energy figure for any site. DCD
- Energy per prompt Published
- 0.34 Wh for an average ChatGPT query, June 2025, stated without a method. Sam Altman
- 1,287 MWh to train GPT-3 175B (2020), third-party estimate
- 0.34 Wh average query, ChatGPT, June 2025
"Published" means the developer's own statement; "reported by others" means a permit, a regulator or the press. A company's clean-energy claims cover its whole operation, never one model. Environmental Disclosure Index This site Our own reading of what frontier developers and the operators of their data centres have published about training energy, emissions, power sources and energy per prompt, with permits and press reporting marked separately from company statements. Most cells record an absence. Company figures are self-reported and mostly unaudited, and market-based emissions reflect contracts rather than the grid at the hour of use. Cite AI Safety Tracker, "Environmental Disclosure Index". https://aisafetytracker.org/environment/. Retrieved 23 October 2026. Environmental Disclosure Index This site Our own reading of what frontier developers and the operators of their data centres have published about training energy, emissions, power sources and energy per prompt, with permits and press reporting marked separately from company statements. Most cells record an absence. Company figures are self-reported and mostly unaudited, and market-based emissions reflect contracts rather than the grid at the hour of use. Cite AI Safety Tracker, "Environmental Disclosure Index". https://aisafetytracker.org/environment/. Retrieved 23 October 2026.
Usage
The token volumes and user counts OpenAI has stated, each in its own scope.
- 657 trillion tokens a month, OpenAI, API only, as of March 2026 source
- 1.2 billion weekly users, ChatGPT, as of September 2026 source
Volumes are normalised to a month and are comparable only within one company's own scope. Every series with its scope is on the usage page. AI Usage Disclosure Index This site Our own compilation of the token volumes, user counts and shares of use that companies and studies have put on the record, each linked to where it was stated. Scopes, units and token definitions differ between companies, so no two figures are comparable without the scope printed beside each. Figures known only through press reporting are marked as such. Not a market share estimate, and not a measure of any company's actual volume beyond what it chose to state. Cite AI Safety Tracker, "AI Usage Disclosure Index". https://aisafetytracker.org/usage/. Retrieved 23 October 2026. AI Usage Disclosure Index This site Our own compilation of the token volumes, user counts and shares of use that companies and studies have put on the record, each linked to where it was stated. Scopes, units and token definitions differ between companies, so no two figures are comparable without the scope printed beside each. Figures known only through press reporting are marked as such. Not a market share estimate, and not a measure of any company's actual volume beyond what it chose to state. Cite AI Safety Tracker, "AI Usage Disclosure Index". https://aisafetytracker.org/usage/. Retrieved 23 October 2026.