Compare · ModelsLive · 2 picked · head to head
Claude Opus 5.5 vs GPT-5.6 Sol
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Opus 5.5 wins on 16/17 benchmarks
Claude Opus 5.5 wins 16 of 17 shared benchmarks. Leads in agentic · reasoning · general.
Category leads
agentic·Claude Opus 5.5reasoning·Claude Opus 5.5general·Claude Opus 5.5coding·Claude Opus 5.5math·Claude Opus 5.5knowledge·GPT-5.6 Sol
Hype vs Reality
Attention vs performance
Claude Opus 5.5
#3 by perf·#9 by attention
GPT-5.6 Sol
#30 by perf·#4 by attention
Best value
GPT-5.6 Sol
1.6x better value than Claude Opus 5.5
Claude Opus 5.5
6.9 pts/$
$12.00/M
GPT-5.6 Sol
11.1 pts/$
$6.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
17 benchmarks · 2 models
Claude Opus 5.5GPT-5.6 Sol
APEX-Agents
Claude Opus 5.5 leads by +22.1
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
Claude Opus 5.5
73.5
GPT-5.6 Sol
51.4
ARC-AGI
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
Claude Opus 5.5
97.5
GPT-5.6 Sol
97.5
ARC-AGI-2
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
Claude Opus 5.5
92.5
GPT-5.6 Sol
92.5
Dtbench
Claude Opus 5.5 leads by +4.9
Claude Opus 5.5
98.2
GPT-5.6 Sol
93.3
Ebr Bench
Claude Opus 5.5 leads by +26.7
Claude Opus 5.5
71.4
GPT-5.6 Sol
44.8
Frontiercode
Claude Opus 5.5 leads by +7.1
Claude Opus 5.5
54.6
GPT-5.6 Sol
47.5
FrontierMath-Tier-4-v2-Private
Claude Opus 5.5 leads by +12.1
Claude Opus 5.5
95.0
GPT-5.6 Sol
82.9
FrontierMath-Tiers-1-3-v2-Private
Claude Opus 5.5 leads by +2.1
Claude Opus 5.5
91.2
GPT-5.6 Sol
89.1
Frontierswe
Claude Opus 5.5 leads by +30.1
Claude Opus 5.5
62.3
GPT-5.6 Sol
32.2
Furniture Assembly
Claude Opus 5.5 leads by +38.1
Claude Opus 5.5
76.2
GPT-5.6 Sol
38.1
GPQA diamond
GPT-5.6 Sol leads by +3.9
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Opus 5.5
87.5
GPT-5.6 Sol
91.3
Lmca
Claude Opus 5.5 leads by +10.6
Claude Opus 5.5
80.3
GPT-5.6 Sol
69.7
Mirrorcode
Claude Opus 5.5 leads by +57.4
Claude Opus 5.5
77.4
GPT-5.6 Sol
20.0
Mystery Game Puzzles
Claude Opus 5.5 leads by +14.3
Claude Opus 5.5
68.0
GPT-5.6 Sol
53.7
OTIS Mock AIME 2024-2025
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Opus 5.5
100.0
GPT-5.6 Sol
100.0
Proofbench
Claude Opus 5.5 leads by +17.0
Claude Opus 5.5
100.0
GPT-5.6 Sol
83.0
SimpleQA Verified
Claude Opus 5.5 leads by +2.5
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Opus 5.5
72.2
GPT-5.6 Sol
69.7
Full benchmark table
| Benchmark | Claude Opus 5.5 | GPT-5.6 Sol |
|---|---|---|
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 73.5 | 51.4 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 97.5 | 97.5 |
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data. | 92.5 | 92.5 |
Dtbench | 98.2 | 93.3 |
Ebr Bench | 71.4 | 44.8 |
Frontiercode | 54.6 | 47.5 |
FrontierMath-Tier-4-v2-Private | 95.0 | 82.9 |
FrontierMath-Tiers-1-3-v2-Private | 91.2 | 89.1 |
Frontierswe | 62.3 | 32.2 |
Furniture Assembly | 76.2 | 38.1 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 87.5 | 91.3 |
Lmca | 80.3 | 69.7 |
Mirrorcode | 77.4 | 20.0 |
Mystery Game Puzzles | 68.0 | 53.7 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 100.0 | 100.0 |
Proofbench | 100.0 | 83.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 72.2 | 69.7 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $4.00 | $20.00 | 1.0M tokens (~500 books) | $80.00 | |
| $2.00 | $10.00 | 1.1M tokens (~525 books) | $40.00 |
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