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Record standing since Sep 22

Reasoning hit 67.7%.

In February 2025 the best score on Humanity's Last Exam was 26.6%. Claude Opus 5.5 reports 67.7% (with tools, lab-reported), a record it has held since September 22.

4 records in 24 months, one per scrollSkip to the table

How the record moved

Feb 25
26.6

Where it started

The best published score on Humanity's Last Exam was 26.6, held by OpenAI Deep Research. Keep scrolling to watch the record fall 4 times.

Jul 25
44.4+17.8

Grok 4 Heavy

Grok 4 Heavy raised the Humanity's Last Exam record to 44.4, 17.8 points above the previous best.

Feb 26
48.4+4

Gemini Deep Think v2

Gemini Deep Think v2 raised the Humanity's Last Exam record to 48.4, 4 points above the previous best.

Apr 26
64.7+16.3

Claude Mythos Preview

Claude Mythos Preview raised the Humanity's Last Exam record to 64.7, 16.3 points above the previous best.

Sep 26
67.7+3

Claude Opus 5.5

Claude Opus 5.5 raised the Humanity's Last Exam record to 67.7, 3 points above the previous best.

Claude Opus 5.5, record since Sep 22
67.7

Claude Opus 5.5 still holds it

In February 2025 the best score on Humanity's Last Exam was 26.6%. Claude Opus 5.5 reports 67.7% (with tools, lab-reported), a record it has held since September 22.

See every board
Humanity's Last Exam1 of 6
20406080100Nov 24May 25Nov 25May 26Oct 2696 SWE-bench V67.7 HLEOpenAI Deep Research, 26.6
Intelligence IndexClaude Opus 5.5
58Max, Default Fallback, Oct 20
LMArena textGemini 4 Argon
1525aggregator snapshot, Oct 8
SWE-bench VerifiedClaude Opus 5
96.0lab-reported, Jul 24
Artificial Analysis Coding IndexClaude Fable 5.1
82Oct 20

The frontier table

Published scores from each board. Highlighted cells changed in the last 24 hours. Click a column to sort, tick up to four rows to compare.

Compare#Model
1
581507n/a67.793.3$8.0096
256n/an/a46.1n/a$4.00140
356n/an/an/an/an/an/a
4531501n/a46.5n/a$20.0072
553n/an/a54.895.0$20.0072
6531525n/an/an/a$4.0082
7
52n/an/an/an/a$8.00164
852n/an/an/a94.2$4.0055
9
Claude Opus 5Anthropic
51n/a96.0n/an/a$10.00n/a
10
50n/an/an/an/a$20.00n/a
1148n/an/an/an/a$2.00123
12
GPT-6 SolOpenAI
48n/an/an/an/a$4.00n/a
1347n/an/an/an/a$8.00n/a
1446n/an/an/an/a$3.0077
1546n/an/an/an/a$0.5441
16
45n/an/an/an/a$3.0038
1745n/an/an/an/a$0.52212
18
GLM-5.3Zhipu
45n/an/an/an/a$2.1578
19
Grok 4.6SpaceXAI
44n/an/an/an/a$3.00n/a
2044n/an/an/an/a$1.4386
21
Kimi K3Moonshot
44n/an/an/an/a$6.0041
2243n/an/an/an/a$0.20239
2343n/an/an/an/a$0.2696
2442n/an/an/an/a$4.50159
25
42n/an/an/an/a$10.00n/a
2642n/an/an/an/a$0.2478
27
Ling 3.1 FlashInclusionAI
41n/an/an/an/a$0.45218
2841n/an/an/an/a$1.50146
29
41n/an/an/an/a$10.00n/a
3040n/an/an/an/a$3.0038
3140n/an/an/an/a$0.2355
3240n/an/an/an/an/an/a
3340n/an/an/an/a$2.00n/a
3440n/an/an/an/a$0.52235
35
GPT-5.4OpenAI
39n/an/an/an/a$5.63n/a
3639n/an/an/an/a$2.00140
37
Grok 4.5SpaceXAI
39n/an/an/an/a$3.00n/a
3838n/an/an/an/a$2.0756
39
GPT-5.5OpenAI
38n/an/an/an/a$11.25n/a
40
38n/an/an/an/a$4.00n/a
41n/an/an/an/an/a$2.07n/a

Artificial Analysis Intelligence Index. Elo from an Oct 8 snapshot via an aggregator; LMArena blocks direct reads. Lab-reported. OpenAI stopped reporting it in February 2026. Scale's public board, with lab reports noted per score. Settings vary. Semi-private set, via the BenchLM mirror. Blended price assumes 3 input tokens per output token, from list prices.

Full boards: AA Index, LMArena, SWE-bench V, HLE, ARC-AGI-2, Tok / s

The value frontier

Each step of the line is the best score money can buy at that price. Anything below it is beaten by something cheaper. Hover a dot to see what beats it. DeepSeek V4.1 Flash 1017 is new on the line.

  1. Claude Haiku 5.543.4 at $0.20
  2. DeepSeek V4.1 Flash 1017New45.1 at $0.52
  3. MiMo-V2.6-Pro46.3 at $0.54
  4. Muse Spark 1.348.1 at $2.00
  5. Claude Sonnet 5.556 at $4.00
  6. Claude Opus 5.557.6 at $8.00
354045505560AA Index$ per 1M tokens, log scale$0.2$0.5$1$2$5$10$20Muse WonderMuse Spark 1.3DeepSeek V4.1 Flash 1017MiniMax M3.1 FlashClaude Sonnet 5.5MiMo-V2.6-ProClaude Haiku 5.5Muse Spark OpenClaude Opus 5.5

Live wire 44 stories today

All news

Rumor tracker 6 open

Meta is preparing Muse Confidential VM to keep chats private even from Meta

2 sources, open 41 min

Nscale and Anthropic are in talks for a $45 billion compute deal

1 source, open 41 min

OpenAI is preparing GPT-6.1 Terra

3 sources, open 34 hours

An unnamed Anthropic model reads vague requests better

1 source, open 28 hours

DeepSeek V4.1 Pro is coming

2 sources, open 5 days

Claude Fable 5.5 is with partners and ships soon

4 sources, open 19 days

All rumors

Releases

  • Voxtral 3Mistral, speech models and voice SDK
  • Cosmos3-H-DreamsNVIDIA, generative surgical simulation model
  • AnyLanguageModel 1.0Hugging Face, local models on Apple
  • Ornith-1.5-122BOrnith, gGUF and NVFP4 builds available
  • DeepSeek-V4.1-Flash-1017DeepSeek, update at the same price
  • Muse Spark OpenMeta, open weights, 816B
  • Gemini 4 Argon pricingGoogle, doubles to $4 in, $20 out
  • Claude Fable 5.5Anthropic, reported to be with partners
  • MiniMax M3.1 ProMiniMax, announced, no date

Full timeline

Side by side

0 models, overall benchmarks. Yellow wins the row.

Tick at least two models in the table to compare them.