Model comparison

Gemini 2.5 Deep Think vs GPT-5.6 Sol

GPT-5.6 Sol has enough public results to be ranked (#6); Gemini 2.5 Deep Think does not yet, so treat this comparison as directional.

Last verified . 0 shared benchmarks.

GPT-5.6 Sol OpenAI

64.4

Rank #6 Confirmed

Side by side

Gemini 2.5 Deep Think and GPT-5.6 Sol specifications
Gemini 2.5 Deep ThinkGPT-5.6 Sol
ProviderGoogleOpenAI
Noometry Index—64.4
Released2025-08-012026-07-09
WeightsProprietaryProprietary
Context window—1.05M
Max output—128K
Input $ / M tokens—$4
Output $ / M tokens—$20
Results tracked264

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Category by category

Coding Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 61.1 (#7)

Coding benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
DeepSWE—72.7%
FrontierCode—47.5%
CursorBench—41.7%
LMArena WebDev—1619
FrontierSWE—32.2%
SciCode—57.1%
WeirdML—89.4%
LMArena Coding—1493
MirrorCode—20%
ALE-Bench—2,177

Agentic & Tool Use Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 50.2 (#7)

Agentic & Tool Use benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
APEX-Agents—51.4%
OSWorld 2.0—27.3%
τ²-bench Banking—46.9%
PostTrainBench—36.2%
BALROG—60%
GBAEval—52.6%
GDP.pdf—30.7%
LMArena Search—1257
Vending-Bench 2—9,619

Reasoning Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 74.7 (#6)

Reasoning benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
ARC-AGI-2—92.5%
SimpleBench—71.7%
Kagi LLM Benchmark—67%
NYT Connections (extended)—93.8%
ARC-AGI-1—97.5%
CritPt—32.3%
Chess Puzzles—64%
EnigmaEval—37.1%
EBR-Bench—44.8%
LMArena Hard Prompts—1481
Mystery Game Puzzles—58%
DTBench—96%
LMCA—59.2%
Surface Evolver Bench—93.1%
Bench to the Future 3—0.14
Epoch Capabilities Index—161.99

Math Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 85.5 (#7)

Math benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
FrontierMath (Tiers 1-3)—89.1%
FrontierMath Tier 4—82.9%
OTIS Mock AIME 2024-2025—100%
ProofBench—83%
LMArena Math—1472
FrontierMath (Feb 2025 set)29%—
FrontierMath Erdős—0%
FrontierMath Tier 4 (v1)10.4%—

Knowledge Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 64.3 (#16)

Knowledge benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
GPQA Diamond—93.5%
SimpleQA Verified—69.7%
Vectara Hallucination Rate—12.4%
LMArena Expert—1517

Multimodal Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 48.9 (#8)

Multimodal benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
LMArena Vision—1281
Blueprint-Bench 2—33.6%
Furniture Assembly—56.7%
LMArena Document—1483

Multilingual Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 55.4 (#32)

Multilingual benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
LMArena Non-English—1450
LMArena Chinese—1523
LMArena French—1475
LMArena German—1476
LMArena Japanese—1475
LMArena Korean—1434
LMArena Russian—1466
LMArena Spanish—1449

Instruction Following Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 77.8 (#16)

Instruction Following benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
LMArena Instruction Following—1480

Long Context Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 45.3 (#42)

Long Context benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
LMArena Longer Query—1479

Writing & Preference Not comparable

Gemini 2.5 Deep Think: —, GPT-5.6 Sol: 73.5 (#12)

Writing & Preference benchmarks
BenchmarkGemini 2.5 Deep ThinkGPT-5.6 Sol
LMArena Text—1456
LMArena Creative Writing—1450
EQ-Bench Creative Writing—1972
EQ-Bench 4—1250
LMArena Multi-Turn—1456

Frequently asked questions

Is Gemini 2.5 Deep Think better than GPT-5.6 Sol?

GPT-5.6 Sol has enough public results to be ranked (#6); Gemini 2.5 Deep Think does not yet, so treat this comparison as directional.

How many benchmarks do Gemini 2.5 Deep Think and GPT-5.6 Sol share?

0 benchmarks have published results for both models. Gemini 2.5 Deep Think has 2 scored results on Noometry and GPT-5.6 Sol has 64.

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