Noometry

Model comparison

Gemini 3.1 Pro Preview vs Mixtral 8x7B

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 27.1 on the Noometry Index. Mixtral 8x7B costs 6.4× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.

Last verified . 21 shared benchmarks.

Gemini 3.1 Pro Preview Google

56.7

Rank #23 Confirmed

Mixtral 8x7B Mistral AI

27.1

Rank #334 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 8 categories and Mixtral 8x7B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Gemini 3.1 Pro Preview leads 71.8 to 11.0.
  • The biggest single-benchmark swing is GPQA Diamond: 94.4% for Gemini 3.1 Pro Preview and 30.6% for Mixtral 8x7B.
  • Mixtral 8x7B is cheaper at $0.70 / $0.70 per million input/output tokens, against $2 / $12 for Gemini 3.1 Pro Preview.
  • Gemini 3.1 Pro Preview accepts more context: 1.05M tokens versus 32K.
  • Mixtral 8x7B has downloadable open weights; the other is API-only.

Side by side

Gemini 3.1 Pro PreviewMixtral 8x7B
ProviderGoogleMistral AI
Noometry Index56.727.1
Released2026-02-192023-12-11
WeightsProprietaryOpen
Context window1.05M32K
Max output66K32K
Input $ / M tokens$2$0.70
Output $ / M tokens$12$0.70
Results tracked7138

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Category by category

Coding Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 42.5 (#99), Mixtral 8x7B: 32.8 (#269)

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
LMArena Coding14841126
SWE-bench Verified75.6%—
DeepSWE11.7%—
LMArena WebDev1447—
SciCode58.9%—
GSO22.6%—
WeirdML72.1%—
MirrorCode8.9%—
ALE-Bench1,161—
AlgoTune2.02—
HumanEval+—39.6%
MBPP+—49.7%

Agentic & Tool Use Not comparable

Gemini 3.1 Pro Preview: 37.7 (#34), Mixtral 8x7B: —

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
Terminal-Bench80.2%—
APEX-Agents35.3%—
τ²-bench Banking26%—
DeepResearch Bench47.8%—
PostTrainBench22%—
BALROG57%—
ExploitBench26.1%—
GBAEval0.8%—
GDP.pdf17%—
LMArena Search1211—
METR Time Horizons77%—
Vending-Bench 23,774—

Reasoning Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 71.7 (#12), Mixtral 8x7B: 18.2 (#285)

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
LMArena Hard Prompts14851115
DTBench97.1%49.6%
Epoch Capabilities Index154.77118.47
ForecastBench5956.3
ARC-AGI-277.1%—
SimpleBench79.6%—
NYT Connections (extended)97.4%—
ARC-AGI-198%—
CritPt17.7%—
Chess Puzzles55%—
EnigmaEval36.8%—
Thematic Generalization79.4%—
EBR-Bench14.3%—
Mystery Game Puzzles34%—
LMCA53.8%—
Adversarial NLI—55.2%
HellaSwag—86.7%
PIQA—83.6%
WinoGrande—77.2%

Math Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 62.1 (#34), Mixtral 8x7B: 18.8 (#289)

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
LMArena Math14851147
FrontierMath (Tiers 1-3)59.6%—
FrontierMath Tier 426.8%—
MathArena Final-Answer Competitions86.5%—
OTIS Mock AIME 2024-202595.6%—
ProofBench26%—
Omni-MATH—10.5%
MATH Level 5—10%
FrontierMath (Feb 2025 set)36.9%—
FrontierMath Tier 4 (v1)16.7%—
GSM8K—74.4%

Knowledge Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 71.8 (#3), Mixtral 8x7B: 11.0 (#301)

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
GPQA Diamond94.4%30.6%
LMArena Expert14851088
Humanity's Last Exam46.4%—
SimpleQA Verified73.5%—
MMLU-Pro—33.5%
Vectara Hallucination Rate10.4%—
GPQA (HELM)—29.6%
ARC (AI2) Challenge—87.3%
MMLU—70.6%
OpenBookQA—85.8%
TriviaQA—82.2%

Multimodal Not comparable

Gemini 3.1 Pro Preview: 37.9 (#69), Mixtral 8x7B: —

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
LMArena Vision1296—
Blueprint-Bench 226.5%—
Furniture Assembly26.7%—
LMArena Document1444—

Multilingual Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 57.0 (#12), Mixtral 8x7B: 29.6 (#266)

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
LMArena Non-English14771077
LMArena Chinese15291055
LMArena French14871166
LMArena German14911114
LMArena Japanese1493931
LMArena Korean1455968
LMArena Russian14981090
LMArena Spanish14791111

Instruction Following Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 77.0 (#32), Mixtral 8x7B: 51.0 (#297)

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
LMArena Instruction Following14661109
IFEval—57.5%

Long Context Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 47.4 (#18), Mixtral 8x7B: 33.4 (#260)

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
LMArena Longer Query14831103
CL-bench20.8%—
CL-bench Life16.9%—

Writing & Preference Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 66.1 (#37), Mixtral 8x7B: 34.2 (#270)

BenchmarkGemini 3.1 Pro PreviewMixtral 8x7B
LMArena Text14811132
LMArena Creative Writing14821109
LMArena Multi-Turn14881115
EQ-Bench Creative Writing1491—
WildBench—67.3%
EQ-Bench 41142—

Frequently asked questions

Is Gemini 3.1 Pro Preview better than Mixtral 8x7B?

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 27.1 on the Noometry Index. Mixtral 8x7B costs 6.4× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.

Which is cheaper, Gemini 3.1 Pro Preview or Mixtral 8x7B?

Mixtral 8x7B is cheaper. It lists at $0.70 per million input tokens and $0.70 per million output tokens; Gemini 3.1 Pro Preview lists at $2 and $12.

Is Gemini 3.1 Pro Preview or Mixtral 8x7B better for coding?

Gemini 3.1 Pro Preview scores higher on coding benchmarks: 42.5 versus 32.8 in the Noometry coding category.

Which has the bigger context window?

Gemini 3.1 Pro Preview does, with 1.05M tokens against 32K.

How many benchmarks do Gemini 3.1 Pro Preview and Mixtral 8x7B share?

21 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and Mixtral 8x7B has 38.

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