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AI model history

What was the top AI model in ?

GPT-5.2 from OpenAI, scoring 30.4 on the Intelligence Index at $4.81 per million tokens. It had been on top for 7 weeks.

Top Intelligence Index score on each day. Click anywhere to go there.

Leaderboard

The top 10 on January 31, 2026

Ranked by the Artificial Analysis Intelligence Index, with each model's price on that day (per million tokens, 3 parts input to 1 part output).

  1. 1
    GPT-5.2Closed
    OpenAI · released Dec 11, 2025 · 7 weeks old
    Intelligence 30.4
    $4.81 /M
  2. 2
    Claude Opus 4.5Closed
    Anthropic · released Nov 24, 2025 · 2 months old
    Intelligence 29.1
    $10 /M
  3. 3
    GPT-5.2 CodexClosed
    OpenAI · released Dec 11, 2025 · 7 weeks old
    Intelligence 28.5
    $4.81 /M
  4. 4
    Gemini 3 Pro PreviewClosed
    Google · released Nov 18, 2025 · 2 months old
    Intelligence 28
    $4.50 /M
  5. 5
    Gemini 3 Flash PreviewClosed
    Google · released Dec 17, 2025 · 6 weeks old
    Intelligence 26.3
    $1.12 /M
  6. 6
    GPT-5 CodexClosed
    OpenAI · released Sep 23, 2025 · 4 months old
    Intelligence 24.9
    $3.44 /M
  7. 7
    GPT-5.1Closed
    OpenAI · released Nov 13, 2025 · 3 months old
    Intelligence 24.7
    $3.44 /M
  8. 8
    GPT-5.1 CodexClosed
    OpenAI · released Nov 13, 2025 · 3 months old
    Intelligence 23.7
    $3.44 /M
  9. 9
    Kimi K2.5Open weights
    Kimi · released Jan 27, 2026 · 4 days old
    Intelligence 23.5
    $1.14 /M
  10. 10
    GPT-5Closed
    OpenAI · released Aug 7, 2025 · 6 months old
    Intelligence 23
    $3.44 /M

9 months later

What has happened since

#59Where GPT-5.2 ranks today

180 models have come out since. Today's best is Claude Opus 5.5 at 57.6, 27.2 points higher.

30×Cheaper for the same score

Agnes 2.5 Pro Beta scores at least as well today for $0.15 per million tokens, against $4.81 for GPT-5.2 back then.

4 monthsUntil it cost under $1

DeepSeek V4 Pro 0424 matched it for $0.54 per million tokens on May 22, 2026.

3 monthsUntil open weights caught up

DeepSeek V4 Pro 0424 from DeepSeek matched it on Apr 24, 2026, free to download and run.

The race

Which lab held the top spot

OpenAI led for 2.5 years of the 4 years since ChatGPT launched. Anthropic has held #1 since Apr 16, 2026, 6 models in a row. We rank by the Artificial Analysis Intelligence Index. Other leaderboards, such as LMArena's human votes, crown different models.

  • OpenAI65%2.5 years at #1 across 12 models. Longest: GPT-4, 8 months.
  • Anthropic33%15 months at #1 across 11 models. Longest: Claude 3 Opus, 6 months.
  • xAI2%4 weeks at #1 across 1 model. Longest: Grok 4, 4 weeks.
  • Google<1%6 days at #1 across 1 model. Longest: Gemini 3 Pro Preview, 6 days.

The wider field

320 models were out on Jan 31, 2026

Best open model
Kimi K2.5

Kimi, scoring 23.5. #9 overall, 6.9 points behind.

Best under $1 per million
DeepSeek V3.2

DeepSeek, scoring 21.5. #16 overall at $0.32, 15× cheaper than #1.

New in the 30 days before · 10
  • LongCat Flash Lite11.5
  • Kimi K2.523.5
  • Qwen3 Max Thinking21.3
  • Step3 VL 10B7.7
  • LFM2.5-1.2B-Thinking5.2
  • GLM-4.7-Flash14.9
and 4 more

Browse

The top AI model, month by month

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Try today's top models on your own prompt

Scores tell you who leads on average. Send one prompt to up to six models and see which answer you'd actually use, with what each one cost. For the long view of prices, read Six months later, the best AI costs 20× less.

Compare models

Scores and release dates from Artificial Analysis (Intelligence Index, best published effort of each model), data through October 18, 2026. Prices are list prices on the day, including later cuts we know of. Models without a public price are ranked but not priced.