Changelog · 29 changes · 28 charts
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29
Charts changed
28
Latest
3 November 2026
Log starts
27 October 2026

3 November 2026

  1. AI Infrastructure · chart 10.8.2The US has 83% of the power of the large AI data centres Epoch AI tracks; Malaysia is next with 8%

    Updated from Epoch AI's data read 2026-11-03: the key number went from 84% to 83%.

  2. AI Models · chart 10.6.225 AI models have been trained with more than 10²⁵ FLOP, the EU AI Act's systemic-risk threshold; 18 are American

    Updated from Epoch AI's data read 2026-11-03: the key number went from 24 to 25.

31 October 2026

  1. AI Models · chart 8.3.4The US has released 1,731 AI models since 2010, almost twice China's 888

    Rebuilt live from Epoch AI's own data, replacing the AI Index 2026 copy, read 2026-10-31: the key number went from 1,618 to 1,731.

  2. AI Infrastructure · chart 8.3.1China had 76 public or public-private AI supercomputers by 2025, close to Europe and North America combined

    Rebuilt live from Epoch AI's own data, replacing the AI Index 2026 copy, read 2026-10-31: the key number went from 85 to 76.

  3. AI Benchmarks · chart 2.6.2The best AI agent completed 72.1% of OSWorld computer tasks in 2026, against 72.4% for people

    Rebuilt live from Epoch AI's own data (read 2026-10-31), replacing the AI Index 2026 copy: the key number went from 66.3% to 72.1%.

  4. AI Benchmarks · chart 2.5.4The best model solved 47.9% of FrontierMath's hardest problems in 2026, up from 0% in 2024

    Rebuilt live from Epoch AI's own data (read 2026-10-31), replacing the AI Index 2026 copy: the key number went from 31.3% to 47.9%.

  5. AI Benchmarks · chart 2.5.1The best SWE-bench Verified score rose from 31% in 2024 to 83.5% in 2026

    Rebuilt live from Epoch AI's own data, replacing the AI Index 2026 copy, read 2026-10-31: the key number went from 76.8% to 83.5%.

  6. AI Benchmarks · chart 2.4.4The best Humanity's Last Exam score rose from 8% in 2024 to 54.8% in 2026

    Rebuilt live from Epoch AI's own data, replacing the AI Index 2026 copy, read 2026-10-31: the key number went from 38.3% to 54.8%.

  7. AI Benchmarks · chart 2.4.3The best ARC-AGI-2 score rose from 0.8% in 2024 to 95% in 2026

    Rebuilt live from Epoch AI's own data, replacing the AI Index 2026 copy, read 2026-10-31: the key number went from 84.6% to 95%.

  8. AI Benchmarks · chart 2.4.2The best GPQA Diamond score rose from 42.4% in 2023 to 96.4% in 2026, above the 81.2% expert baseline

    Updated from Epoch AI's data read 2026-10-31: the key number went from 96% to 96.4%.

  9. AI Benchmarks · chart 2.4.2The best GPQA Diamond score rose from 42.4% in 2023 to 96.4% in 2026, above the 81.2% expert baseline

    Rebuilt live from Epoch AI's own data (read 2026-10-31), replacing the AI Index 2026 copy: the key number went from 93% to 96%.

  10. AI Infrastructure · chart 1.4.2Training GPT-6 Astra drew an estimated 233 MW, the most of any model with published data

    Rebuilt live from Epoch AI's own data (read 2026-10-31), replacing the AI Index 2026 copy: the key number went from 110 MW to 233 MW.

  11. AI Infrastructure · chart 1.4.1The most efficient leading AI chip does 2.1 trillion 16-bit operations per second per watt

    Rebuilt live from Epoch AI's own data, replacing the AI Index 2026 copy, read 2026-10-31: the key number went from 2.5T to 2.1T.

  12. AI Infrastructure · chart 1.2.4AI data centre power capacity reached 39.4 GW by Q1 2026, above New York state's peak demand

    Rebuilt live from Epoch AI's own data (read 2026-10-31), replacing the AI Index 2026 copy: the key number went from 29.6 GW to 39.4 GW.

  13. AI Infrastructure · chart 1.2.3AI chips worldwide reached 31.7 million H100-equivalents by Q2 2026; Nvidia supplied two-thirds

    Rebuilt live from Epoch AI's own data (read 2026-10-31), replacing the AI Index 2026 copy: the key number went from 17.1M to 31.7M.

  14. AI Infrastructure · chart 1.2.288 notable AI models have been trained on Nvidia A100 chips, more than on any other accelerator

    Rebuilt live from Epoch AI's own data (read 2026-10-31), replacing the AI Index 2026 copy: the key number went from 84 to 88.

  15. AI Infrastructure · chart 1.2.1The fastest AI chips now reach 5 petaFLOP/s at 16-bit precision

    Rebuilt live from Epoch AI's own data (read 2026-10-31), replacing the AI Index 2026 copy: the key number went from 2.5P to 5P.

  16. AI Models · chart 1.1.9Training code stayed closed for 87 of 2025's 109 notable AI models

    Updated from Epoch AI's data read 2026-10-31: the key number went from 86 to 87.

  17. AI Models · chart 1.1.8More notable AI models launched behind an API than with open weights in 2025: 56 vs 46

    Updated from Epoch AI's data read 2026-10-31: the key number went from 55 to 56.

  18. AI Models · chart 1.1.6OpenAI released the most notable AI models in 2025: 22, ahead of Google's 15

    Updated from Epoch AI's data read 2026-10-31: the key number went from 21 to 22.

  19. AI Models · chart 1.1.4Industry built 100 of the 109 notable AI models released in 2025

    Updated from Epoch AI's data read 2026-10-31: the key number went from 98 to 100.

  20. AI Models · chart 1.1.3Since 2003, the US has produced 598 notable AI models, nearly four times China's 161

    Updated from Epoch AI's data read 2026-10-31: the key number went from 596 to 598.

  21. AI Models · chart 1.1.2China's notable AI models rose for a third straight year to 36; Europe's fell to 2

    Updated from Epoch AI's data read 2026-10-31: the key number went from 35 to 36.

  22. AI Models · chart 1.1.10The median notable AI model of 2025 had 182B parameters, up from 16M in 2015

    Updated from Epoch AI's data read 2026-10-31: the key number went from 135B to 182B.

  23. AI Models · chart 1.1.1The US produced 65 notable AI models in 2025; China produced 36

    Updated from Epoch AI's data read 2026-10-31: the key number went from 64 to 65.

27 October 2026

  1. AI in Healthcare · chart 6.2.8FDA authorisations of AI devices outside radiology rose from 7 in 2016 to 81 in 2025

    Now counted from the FDA's own list: 81 devices outside radiology in 2025, the full year (was 60, counted to September).

  2. AI in Healthcare · chart 6.2.7Radiology accounts for 1,095 of the 1,433 AI-enabled devices the FDA has authorised, 76.4%

    Now counted from the FDA's own list to the end of 2025: radiology has 1,095 of 1,433 devices, 76.4% (was 1,039 of 1,357, 76.6%).

  3. AI in Healthcare · chart 6.2.6The FDA authorised 335 AI-enabled medical devices in 2025, bringing the total since 1995 to 1,433

    Now counted from the FDA's own list: 2025 is the full year, 335 devices, where the AI Index counted January to September (258); the total since 1995 is 1,433 (was 1,357).

  4. AI Ethics & Safety · chart 3.2.1Reported AI incidents rose 48% to 463 in 2025, a record for the AI Incident Database

    Now counted from the AI Incident Database's own weekly data instead of the AI Index Report 2026's early-2026 count: 2025 rose from 362 to 463 incidents, because AIID keeps adding incidents after the fact.

This log starts on 27 October 2026. It lists numbers that moved because the data moved: a source published more, or a count we now take from the source itself. Mistakes we fixed are on Corrections.