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Claude Opus 4.8

Anthropic

Strongest in General intelligence (#5 of 178, on 1 of its 3 boards), weakest in Secure code (#122 of 270). Above par in 27 of 27 scopes. Among the models it meets almost everywhere, it finishes behind Claude Fable 5 and Claude Fable 5.1 and ahead of Gemini 3.1 Pro and GPT-6 Sol.

§ 1 · Profile

What it is good at

Bars run from 50 — the average of the models each source lists — so right of the line is above par. The middle column is the gap to whoever leads that scope.

Safety59.8#6/329
Fairness69.2#13/292
Harm refusal59.2#16/292
Jailbreak resistance61.7#27/268
Toxicity avoidance58#31/268
Secure code54#122/270
Professional57.6#12/194
Finance58.7#9/162
Medical59.8#9/149
Legal56.4#31/173
Core abilities59.3#13/199
General intelligence67.6#5/178
Instruction following57.1#19/62
Language52.1#31/62
Reasoning58.1#19/195
Science61.4#16/122
Reasoning57.4#35/147
Mathematics56.7#38/152
Human preference64.5#24/354
Human preference64.5#24/354
Coding55.4#30/179
Agentic coding55.6#32/173
Agents56.8#39/298
Knowledge work60.9#44/208
Knowledge54.6#41/197
Academic knowledge60.4#9/123
Document parsing53.8#38/83

§ 2 · Head to head

What it beats, and what beats it

The same models turn up scope after scope. Counted once: where both were placed, who finished higher. Bars run right for Claude Opus 4.8, left for the other.

Magistral Small 1.2won 17 · lost 0
Gemini 2.5 Flash-Litewon 17 · lost 0
MiniMax M2.5won 17 · lost 0
Grok 4 Fastwon 17 · lost 0
Mistral Medium 3.5won 17 · lost 0
Gemini 1.5 Prowon 18 · lost 0
Inkling Smallwon 18 · lost 0
Qwen3.6 Pluswon 18 · lost 0
Llama 3.3 70B Instructwon 19 · lost 0
Grok 3 Miniwon 19 · lost 0
GLM-4.5won 19 · lost 0
Mistral Large 3won 19 · lost 0
Gemini 3.1 Flash-Litewon 19 · lost 0
GPT-5.4 miniwon 20 · lost 0
Gemini 3.5 Flash-Litewon 21 · lost 0
Llama 4 Scout Instructwon 22 · lost 0
Command Awon 22 · lost 0
Gemini 2.0 Flashwon 22 · lost 0
GPT-5.4 nanowon 22 · lost 0
Grok 3won 22 · lost 0
Claude Sonnet 4.6won 23 · lost 0
DeepSeek V3won 24 · lost 0
Claude Sonnet 4.5won 24 · lost 0
DeepSeek V4 Flashwon 26 · lost 0
GLM-5.2won 25 · lost 1
GPT-4.1 nanowon 23 · lost 1
GPT-4.1 miniwon 23 · lost 1
DeepSeek V3.2won 23 · lost 1
Grok 4.3won 23 · lost 1
Gemini 2.5 Prowon 23 · lost 1
Kimi K2.6won 23 · lost 1
GPT-4o miniwon 22 · lost 1
Gemini 2.5 Flashwon 22 · lost 1
Claude Haiku 4.5won 22 · lost 1
Kimi K2won 22 · lost 1
Qwen3 235B A22B Instructwon 22 · lost 1
GPT-4owon 21 · lost 1
O3 Miniwon 21 · lost 1
GPT OSS 20Bwon 20 · lost 1
Gemma 4 31Bwon 20 · lost 1
MiMo V2.5 Prowon 20 · lost 1
Kimi K2 Thinkingwon 19 · lost 1
Claude 3.7 Sonnetwon 19 · lost 1
Ling 3.0 Flashwon 17 · lost 1
GLM-4.7won 16 · lost 1
GLM-5won 16 · lost 1
GPT-6 Lunawon 23 · lost 2
GPT OSS 120Bwon 22 · lost 2
Kimi K2.5won 22 · lost 2
Grok 4won 21 · lost 2
GPT-4.1won 21 · lost 2
DeepSeek R1won 21 · lost 2
Mistral Large 4won 21 · lost 2
Claude Opus 4won 20 · lost 2
GLM-5.1won 20 · lost 2
Grok 4.1 Fastwon 19 · lost 2
MiMo V2.6 Prowon 19 · lost 2
MiMo V2.6 Flashwon 18 · lost 2
Claude Opus 4.5won 18 · lost 2
GLM-5.3 Flashwon 24 · lost 3
MiniMax M3won 23 · lost 3
Inklingwon 23 · lost 3
DeepSeek V4 Prowon 23 · lost 3
Grok 4.5won 23 · lost 3
Claude Sonnet 4won 21 · lost 3
Qwen3.7 Maxwon 21 · lost 3
O4 Miniwon 20 · lost 3
GLM-4.6won 20 · lost 3
GPT-5 nanowon 18 · lost 3
MiniMax M2.7won 18 · lost 3
O1won 17 · lost 3
GPT-5.2won 21 · lost 4
O3won 19 · lost 4
Claude Opus 4.6won 19 · lost 4
GPT-5.6 Lunawon 22 · lost 5
GPT-5.4won 22 · lost 5
Qwen3.8 27Bwon 17 · lost 4
Claude 3.5 Haikuwon 16 · lost 4
GPT-5 miniwon 20 · lost 5
GPT-5won 19 · lost 5
GPT-5.1won 17 · lost 5
Claude 3.5 Sonnetwon 14 · lost 5
Gemini 3.5 Flashwon 19 · lost 7
Gemini 3.6 Flashwon 19 · lost 7
Qwen3.8 Maxwon 18 · lost 7
Muse Spark 1.1won 17 · lost 7
Claude Haiku 5.5won 13 · lost 6
GPT-5.6 Terrawon 18 · lost 9
Grok 4.6won 17 · lost 9
Claude Sonnet 5won 17 · lost 9
DeepSeek V4.1 Flashwon 13 · lost 7
Kimi K3won 13 · lost 7
Gemini 3.8 Flashwon 17 · lost 10
GPT-5.5won 16 · lost 10
Grok 4.7won 14 · lost 9
GLM-5.3won 12 · lost 8
Gemini 3 Prowon 12 · lost 8
Claude Opus 4.7won 16 · lost 11
GPT-6 Solwon 13 · lost 11
Gemini 3.1 Prowon 11 · lost 10
Gemini 3.7 Flashwon 10 · lost 10
GPT-5.6 Solwon 12 · lost 15
Muse Spark 1.2won 7 · lost 11
Claude Sonnet 5.5won 7 · lost 12
GPT-6.1 Solwon 7 · lost 12
GPT-6 Astrawon 7 · lost 13
Claude Opus 5.5won 7 · lost 18
Claude Opus 5won 6 · lost 19
Claude Fable 5.1won 1 · lost 20
Claude Fable 5won 0 · lost 21

§ 3 · Sources

Where the numbers come from

11 publications, 40 figures. Every one links to the page it was read from.

LMArena Text ↗1 measureread 2026-11-10
LMArena Text 1482
GDPval-AA ↗1 measureread 2026-11-10
GDPval-AA 1462
AA-Briefcase ↗1 measureread 2026-11-10
AA-Briefcase 1320
Terminal-Bench ↗1 measureread 2026-11-10
Terminal-Bench 23.6% (Claude Code)
ARC-AGI-2 ↗1 measureread 2026-11-10
ARC-AGI-2 72.1%
LiveBench 1.0 ↗8 measuresread 2026-11-10
LiveBench 1.0 76.2LiveBench 1.0 · Reasoning 89.2LiveBench 1.0 · Coding 81.8LiveBench 1.0 · Agentic Coding 50.5LiveBench 1.0 · Mathematics 94.3LiveBench 1.0 · Data Analysis 66LiveBench 1.0 · Language 79.7LiveBench 1.0 · Instruction Following 72
Kagi LLM Benchmark ↗1 measureread 2026-11-10
Kagi LLM Benchmark 88.8%
SimpleBench ↗1 measureread 2026-11-10
SimpleBench 64.8%
Vals.ai ↗13 measuresread 2026-11-10
Vals · Legal Research Bench 43.75%Vals · LegalBench 83.57%Vals · Finance Agent 53.92%Vals · CorpFin 66.71%Vals · TaxEval 75.63%Vals · MortgageTax 69.91%Vals · MedCode 53.22%Vals · MedScribe 85.75%Vals · SWE-bench Verified 88.6% (Mini-SWE-agent)Vals · Vibe Code Bench 82.72% (OpenHands)Vals · Code Migration 47.25%Vals · GPQA Diamond 92.42%Vals · MMLU Pro 89.58%
ParseBench ↗6 measuresread 2026-11-10
ParseBench · Overall 62.27%ParseBench · Tables 89.65%ParseBench · Charts 49.75%ParseBench · Content faithfulness 89.02%ParseBench · Semantic formatting 71.38%ParseBench · Visual grounding 11.53%
Enkrypt AI Safety Leaderboard ↗6 measuresread 2026-11-10
Enkrypt · Jailbreak risk 3%Enkrypt · Harmful content risk 0.6%Enkrypt · CBRN risk 8%Enkrypt · Toxicity risk 0.7%Enkrypt · Bias risk 48.1%Enkrypt · Insecure code risk 24.9%

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