Compare · ModelsLive · 2 picked · head to head
GPT-5.6 Sol vs Claude Opus 4.8
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.6 Sol wins on 22/22 benchmarks
GPT-5.6 Sol wins 22 of 22 shared benchmarks. Leads in agentic · reasoning · knowledge.
Category leads
agentic·GPT-5.6 Solreasoning·GPT-5.6 Solknowledge·GPT-5.6 Solcoding·GPT-5.6 Solgeneral·GPT-5.6 Solmath·GPT-5.6 Sol
Hype vs Reality
Attention vs performance
GPT-5.6 Sol
#30 by perf·#4 by attention
Claude Opus 4.8
#75 by perf·#6 by attention
Best value
GPT-5.6 Sol
3.0x better value than Claude Opus 4.8
GPT-5.6 Sol
11.1 pts/$
$6.00/M
Claude Opus 4.8
3.7 pts/$
$15.00/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
Anthropic
$965.0B·Tier 1
Head to head
22 benchmarks · 2 models
GPT-5.6 SolClaude Opus 4.8
APEX-Agents
GPT-5.6 Sol leads by +2.5
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
GPT-5.6 Sol
51.4
Claude Opus 4.8
48.9
ARC-AGI
GPT-5.6 Sol leads by +5.0
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
GPT-5.6 Sol
97.5
Claude Opus 4.8
92.5
ARC-AGI-2
GPT-5.6 Sol leads by +20.4
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
GPT-5.6 Sol
92.5
Claude Opus 4.8
72.1
Chess Puzzles
GPT-5.6 Sol leads by +31.6
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
GPT-5.6 Sol
62.1
Claude Opus 4.8
30.6
Deepswe
GPT-5.6 Sol leads by +13.7
GPT-5.6 Sol
72.7
Claude Opus 4.8
59.0
Dtbench
GPT-5.6 Sol leads by +1.8
GPT-5.6 Sol
93.3
Claude Opus 4.8
91.5
Ebr Bench
GPT-5.6 Sol leads by +16.2
GPT-5.6 Sol
44.8
Claude Opus 4.8
28.6
Frontiercode
GPT-5.6 Sol leads by +1.0
GPT-5.6 Sol
47.5
Claude Opus 4.8
46.5
FrontierMath-Tier-4-v2-Private
GPT-5.6 Sol leads by +26.8
GPT-5.6 Sol
82.9
Claude Opus 4.8
56.1
FrontierMath-Tiers-1-3-v2-Private
GPT-5.6 Sol leads by +9.1
GPT-5.6 Sol
89.1
Claude Opus 4.8
80.0
Furniture Assembly
GPT-5.6 Sol leads by +20.2
GPT-5.6 Sol
38.1
Claude Opus 4.8
17.9
GPQA diamond
GPT-5.6 Sol leads by +3.3
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
GPT-5.6 Sol
91.3
Claude Opus 4.8
88.0
Lmca
GPT-5.6 Sol leads by +2.0
GPT-5.6 Sol
69.7
Claude Opus 4.8
67.7
Mystery Game Puzzles
GPT-5.6 Sol leads by +24.2
GPT-5.6 Sol
53.7
Claude Opus 4.8
29.5
Osworld 2 0
GPT-5.6 Sol leads by +6.7
GPT-5.6 Sol
27.3
Claude Opus 4.8
20.6
OTIS Mock AIME 2024-2025
GPT-5.6 Sol leads by +1.7
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
GPT-5.6 Sol
100.0
Claude Opus 4.8
98.3
PostTrainBench
GPT-5.6 Sol leads by +2.4
GPT-5.6 Sol
36.2
Claude Opus 4.8
33.8
Proofbench
GPT-5.6 Sol leads by +14.0
GPT-5.6 Sol
83.0
Claude Opus 4.8
69.0
SimpleBench
GPT-5.6 Sol leads by +8.3
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
GPT-5.6 Sol
66.0
Claude Opus 4.8
57.8
SimpleQA Verified
GPT-5.6 Sol leads by +16.7
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
GPT-5.6 Sol
69.7
Claude Opus 4.8
53.0
Surface Evolver Bench
GPT-5.6 Sol leads by +5.6
GPT-5.6 Sol
93.1
Claude Opus 4.8
87.5
WeirdML
GPT-5.6 Sol leads by +6.5
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
GPT-5.6 Sol
89.4
Claude Opus 4.8
82.9
Full benchmark table
| Benchmark | GPT-5.6 Sol | Claude Opus 4.8 |
|---|---|---|
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 51.4 | 48.9 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 97.5 | 92.5 |
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 | 72.1 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 62.1 | 30.6 |
Deepswe | 72.7 | 59.0 |
Dtbench | 93.3 | 91.5 |
Ebr Bench | 44.8 | 28.6 |
Frontiercode | 47.5 | 46.5 |
FrontierMath-Tier-4-v2-Private | 82.9 | 56.1 |
FrontierMath-Tiers-1-3-v2-Private | 89.1 | 80.0 |
Furniture Assembly | 38.1 | 17.9 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 91.3 | 88.0 |
Lmca | 69.7 | 67.7 |
Mystery Game Puzzles | 53.7 | 29.5 |
Osworld 2 0 | 27.3 | 20.6 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 100.0 | 98.3 |
PostTrainBench | 36.2 | 33.8 |
Proofbench | 83.0 | 69.0 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 66.0 | 57.8 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 69.7 | 53.0 |
Surface Evolver Bench | 93.1 | 87.5 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 89.4 | 82.9 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $2.00 | $10.00 | 1.1M tokens (~525 books) | $40.00 | |
| $5.00 | $25.00 | 1.0M tokens (~500 books) | $100.00 |