Noometry

Model comparison

Gemini 3.6 Flash vs GPT-5.6 Terra

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 54.1 on the Noometry Index. Gemini 3.6 Flash costs 3.0× less per token, which makes it the better buy when GPT-5.6 Terra's lead doesn't matter for your workload.

Last verified . 45 shared benchmarks.

Gemini 3.6 Flash Google

54.1

Rank #33 Confirmed

GPT-5.6 Terra OpenAI

59.2

Rank #17 Confirmed

Summary

  • They share 45 benchmarks with published results for both. Gemini 3.6 Flash scores higher in 4 categories and GPT-5.6 Terra in 6 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-5.6 Terra leads 81.6 to 57.3.
  • The biggest single-benchmark swing is FrontierMath Tier 4: 22% for Gemini 3.6 Flash and 70.7% for GPT-5.6 Terra.
  • Gemini 3.6 Flash is cheaper at $0.75 / $3.75 per million input/output tokens, against $2 / $12 for GPT-5.6 Terra.
  • GPT-5.6 Terra accepts more context: 1.05M tokens versus 1.05M.

Side by side

Gemini 3.6 FlashGPT-5.6 Terra
ProviderGoogleOpenAI
Noometry Index54.159.2
Released2026-07-212026-07-09
WeightsProprietaryProprietary
Context window1.05M1.05M
Max output66K128K
Input $ / M tokens$0.75$2
Output $ / M tokens$3.75$12
Results tracked4652

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding GPT-5.6 Terra leads

Gemini 3.6 Flash: 50.0 (#48), GPT-5.6 Terra: 57.7 (#19)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
DeepSWE46.7%69.6%
FrontierCode34.4%41.3%
LMArena WebDev15381522
SciCode52.7%55%
WeirdML56.1%78.3%
LMArena Coding14911484
ALE-Bench715.521,951
CursorBench—41.3%

Agentic & Tool Use GPT-5.6 Terra leads

Gemini 3.6 Flash: 32.3 (#65), GPT-5.6 Terra: 40.1 (#25)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
APEX-Agents46.9%58.2%
GDP.pdf14%24.7%
BALROG—53.2%
Vending-Bench 2—7,343

Reasoning GPT-5.6 Terra leads

Gemini 3.6 Flash: 58.8 (#22), GPT-5.6 Terra: 60.7 (#21)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
ARC-AGI-260.4%83.9%
NYT Connections (extended)89%78.4%
ARC-AGI-191.2%96.5%
CritPt10.6%30%
Chess Puzzles43%54%
LMArena Hard Prompts14851468
Mystery Game Puzzles30%35%
DTBench95.5%93.3%
LMCA44.9%55%
Epoch Capabilities Index154.25159.62
SimpleBench—48.9%
Kagi LLM Benchmark—51.3%
Surface Evolver Bench—83.8%

Math GPT-5.6 Terra leads

Gemini 3.6 Flash: 57.3 (#40), GPT-5.6 Terra: 81.6 (#12)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
FrontierMath (Tiers 1-3)58.9%86%
FrontierMath Tier 422%70.7%
OTIS Mock AIME 2024-202594.2%99.7%
ProofBench36%74%
LMArena Math15051466
MathArena Final-Answer Competitions70.8%—

Knowledge Gemini 3.6 Flash leads

Gemini 3.6 Flash: 67.8 (#8), GPT-5.6 Terra: 61.2 (#30)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
GPQA Diamond94.1%93.3%
SimpleQA Verified66.2%43.2%
LMArena Expert14881492

Multimodal GPT-5.6 Terra leads

Gemini 3.6 Flash: 38.5 (#64), GPT-5.6 Terra: 47.3 (#11)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
LMArena Vision12981271
Blueprint-Bench 231.2%30.8%
Furniture Assembly23.3%54.2%
LMArena Document14561472

Multilingual Gemini 3.6 Flash leads

Gemini 3.6 Flash: 56.5 (#19), GPT-5.6 Terra: 54.4 (#44)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
LMArena Non-English14691439
LMArena Chinese15311513
LMArena French15041471
LMArena German14781460
LMArena Japanese14761457
LMArena Korean14311425
LMArena Russian14871450
LMArena Spanish14751448

Instruction Following Too close to call

Gemini 3.6 Flash: 77.0 (#33), GPT-5.6 Terra: 76.4 (#40)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
LMArena Instruction Following14661454

Long Context Too close to call

Gemini 3.6 Flash: 45.1 (#50), GPT-5.6 Terra: 44.4 (#68)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
LMArena Longer Query14741451

Writing & Preference GPT-5.6 Terra leads

Gemini 3.6 Flash: 68.2 (#27), GPT-5.6 Terra: 70.2 (#23)

BenchmarkGemini 3.6 FlashGPT-5.6 Terra
LMArena Text14791447
LMArena Creative Writing14651410
EQ-Bench Creative Writing16041855
LMArena Multi-Turn14811449
EQ-Bench 4—1234

Frequently asked questions

Is Gemini 3.6 Flash better than GPT-5.6 Terra?

GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 54.1 on the Noometry Index. Gemini 3.6 Flash costs 3.0× less per token, which makes it the better buy when GPT-5.6 Terra's lead doesn't matter for your workload.

Which is cheaper, Gemini 3.6 Flash or GPT-5.6 Terra?

Gemini 3.6 Flash is cheaper. It lists at $0.75 per million input tokens and $3.75 per million output tokens; GPT-5.6 Terra lists at $2 and $12.

Is Gemini 3.6 Flash or GPT-5.6 Terra better for coding?

GPT-5.6 Terra scores higher on coding benchmarks: 57.7 versus 50.0 in the Noometry coding category.

Which has the bigger context window?

GPT-5.6 Terra does, with 1.05M tokens against 1.05M.

How many benchmarks do Gemini 3.6 Flash and GPT-5.6 Terra share?

45 benchmarks have published results for both models. Gemini 3.6 Flash has 46 scored results on Noometry and GPT-5.6 Terra has 52.

Related comparisons

Go deeper