Compare · ModelsLive · 2 picked · head to head
GPT-5.6 Sol vs GPT-6 Sol
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-6 Sol wins on 8/16 benchmarks
GPT-6 Sol wins 8 of 16 shared benchmarks. Leads in agentic · general · coding.
Category leads
agentic·GPT-6 Solreasoning·GPT-5.6 Solknowledge·GPT-5.6 Solgeneral·GPT-6 Solcoding·GPT-6 Solmath·GPT-6 Sol
Hype vs Reality
Attention vs performance
GPT-5.6 Sol
#31 by perf·#9 by attention
GPT-6 Sol
#23 by perf·#4 by attention
Best value
GPT-6 Sol
1.0x better value than GPT-5.6 Sol
GPT-5.6 Sol
11.2 pts/$
$6.00/M
GPT-6 Sol
11.5 pts/$
$6.00/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
16 benchmarks · 2 models
GPT-5.6 SolGPT-6 Sol
APEX-Agents
GPT-6 Sol leads by +2.9
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
GPT-6 Sol
54.3
ARC-AGI
GPT-5.6 Sol leads by +2.0
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
GPT-6 Sol
95.5
ARC-AGI-2
GPT-5.6 Sol leads by +2.9
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
GPT-6 Sol
89.6
Chess Puzzles
GPT-5.6 Sol leads by +12.6
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
GPT-5.6 Sol
66.3
GPT-6 Sol
53.7
Dtbench
GPT-6 Sol leads by +2.2
GPT-5.6 Sol
93.3
GPT-6 Sol
95.5
Ebr Bench
GPT-6 Sol leads by +8.6
GPT-5.6 Sol
44.8
GPT-6 Sol
53.3
Frontiercode
GPT-6 Sol leads by +1.8
GPT-5.6 Sol
47.5
GPT-6 Sol
49.3
FrontierMath-Tier-4-v2-Private
GPT-6 Sol leads by +7.1
GPT-5.6 Sol
82.9
GPT-6 Sol
90.0
FrontierMath-Tiers-1-3-v2-Private
GPT-6 Sol leads by +0.7
GPT-5.6 Sol
89.1
GPT-6 Sol
89.8
Furniture Assembly
GPT-6 Sol leads by +2.4
GPT-5.6 Sol
38.1
GPT-6 Sol
40.5
GPQA diamond
GPT-6 Sol leads by +1.1
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
GPT-6 Sol
92.4
Lmca
GPT-5.6 Sol leads by +0.1
GPT-5.6 Sol
69.7
GPT-6 Sol
69.5
Mystery Game Puzzles
GPT-5.6 Sol leads by +2.2
GPT-5.6 Sol
53.7
GPT-6 Sol
51.5
OTIS Mock AIME 2024-2025
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
GPT-5.6 Sol
100.0
GPT-6 Sol
100.0
Proofbench
GPT-5.6 Sol
83.0
GPT-6 Sol
83.0
SimpleQA Verified
GPT-5.6 Sol leads by +9.0
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
GPT-6 Sol
60.7
Full benchmark table
| Benchmark | GPT-5.6 Sol | GPT-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. | 51.4 | 54.3 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 97.5 | 95.5 |
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 | 89.6 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 66.3 | 53.7 |
Dtbench | 93.3 | 95.5 |
Ebr Bench | 44.8 | 53.3 |
Frontiercode | 47.5 | 49.3 |
FrontierMath-Tier-4-v2-Private | 82.9 | 90.0 |
FrontierMath-Tiers-1-3-v2-Private | 89.1 | 89.8 |
Furniture Assembly | 38.1 | 40.5 |
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 | 92.4 |
Lmca | 69.7 | 69.5 |
Mystery Game Puzzles | 53.7 | 51.5 |
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 | 83.0 | 83.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 69.7 | 60.7 |
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 | |
| $2.00 | $10.00 | 1.1M tokens (~525 books) | $40.00 |