GPT-6.1 Sol

OpenAI · GPT line · flagship

Released September 29, 2026Latest in the line

GPT-6.1 Sol was released by OpenAI on September 29, 2026, as a flagship model in the GPT line.

  • Release 16 of 16 in the GPT line.
  • Came 7 days after GPT-6 Sol, released Sep 22, 2026.
  • Still the newest model in the line.
  • These days the line ships a new model about every 75 days.

What changed

One week after GPT-6 Sol, it scores 7 points higher on computer-use tasks and 4 points higher on the all-round intelligence index at the same $2 / $10 price.

Compared with GPT-6 Sol · the model it replaces

Completes 7 in 10 tasks when operating a computer on its own

OSWorld 2.0 — using real desktop apps to finish tasks

71.4%

▲ up from 64.4% · +7 points · both at max effort

Scores 4 points higher on the all-round intelligence index

Artificial Analysis Intelligence Index v4.3.2 — one score averaging 10 hard tests

52

▲ up from 48 · +4 points · both at max effort

Costs the same as the model it replaces

Price per 1M tokens — what developers pay, input / output

$2 / $10

same as GPT-6 Sol · cached input halved to $0.10

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Where the GPT line stands

GPT-6.1 Sol is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.

GPT-6.1 Sol

OpenAI · GPT line · flagship
Just releasedreleased 1 day ago — usual gap is ~75
Released Sep 29, 2026 · what changed →
Days since last release
GPT-6.1 Sol · Sep 29, 2026
1
days
Usual gap
75
days
Recent gaps
GPT-6.1 Sol · Sep 2026
7
GPT-6 Sol · Sep 2026
75
GPT-5.6 Sol · Jul 2026
77
GPT-5.5 · Apr 2026
49

Every GPT release

Newest first. See the full line with every card →

  1. Sep 29, 2026GPT-6.1 Sol · this page
  2. Sep 22, 2026GPT-6 Sol
  3. Jul 9, 2026GPT-5.6 Sol
  4. Apr 23, 2026GPT-5.5
  5. Mar 5, 2026GPT-5.4
  6. Dec 11, 2025GPT-5.2
  7. Nov 12, 2025GPT-5.1
  8. Aug 7, 2025GPT-5
  9. Apr 16, 2025o3
  10. Apr 14, 2025GPT-4.1
  11. Dec 5, 2024o1
  12. May 13, 2024GPT-4o
  13. Nov 6, 2023GPT-4 Turbo
  14. Mar 14, 2023GPT-4
  15. Nov 30, 2022GPT-3.5
  16. Jun 11, 2020GPT-3