Model comparison

Claude Sonnet 5.5 vs Mistral 7B

Claude Sonnet 5.5 is the stronger model overall, scoring 60.5 to 22.9 on the Noometry Index. Mistral 7B costs 16× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.

Last verified October 10, 2026. 2 shared benchmarks.

Claude Sonnet 5.5 Anthropic

60.5

Rank #10 Confirmed

Mistral 7B

Mistral AI

22.9

Rank #346 Confirmed

Summary

They share 2 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 4 categories and Mistral 7B in 0 categories; 4 gaps are clear of the uncertainty.
The widest gap is in math, where Claude Sonnet 5.5 leads 88.7 to 7.6.
The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Sonnet 5.5 and 0.3% for Mistral 7B.
Mistral 7B is cheaper at $0.25 / $0.25 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.5.
Claude Sonnet 5.5 accepts more context: 1M tokens versus 8K.
Mistral 7B has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5.5 and Mistral 7B specifications
	Claude Sonnet 5.5	Mistral 7B
Provider	Anthropic	Mistral AI
Noometry Index	60.5	22.9
Released	2026-09-28	2023-09-27
Weights	Proprietary	Open
Context window	1M	8K
Max output	128K	8K
Input $ / M tokens	$2	$0.25
Output $ / M tokens	$10	$0.25
Results tracked	16	37

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Category by category

Coding Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 65.5 (#6), Mistral 7B: 25.9 (#321)

Coding benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
FrontierCode	52.1%	—
CursorBench	55.5%	—
LMArena WebDev	1699	—
FrontierSWE	61.9%	—
SciCode	61%	—
BigCodeBench Instruct	—	19.5%
LMArena Coding	—	1082
BigCodeBench Complete	—	27.3%
ALE-Bench	1,819	—
HumanEval+	—	36%
MBPP+	—	42.1%

Agentic & Tool Use Not comparable

Claude Sonnet 5.5: 44.9 (#14), Mistral 7B: —

Agentic & Tool Use benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
APEX-Agents	75.5%	—

Reasoning Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 52.4 (#29), Mistral 7B: 12.6 (#331)

Reasoning benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
CritPt	31.4%	—
Chess Puzzles	—	0%
LMArena Hard Prompts	—	1067
Mystery Game Puzzles	65%	—
DTBench	—	42.5%
Adversarial NLI	—	47.1%
BIG-Bench Hard	—	56.1%
Epoch Capabilities Index	—	111.97
HellaSwag	—	81%
PIQA	—	83%
WinoGrande	—	75.3%

Math Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 88.7 (#4), Mistral 7B: 7.6 (#319)

Math benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
OTIS Mock AIME 2024-2025	100%	0.3%
FrontierMath (Tiers 1-3)	88.8%	—
FrontierMath Tier 4	80.5%	—
ProofBench	100%	—
LMArena Math	—	1085
MATH Level 5	—	3.7%
GSM8K	—	54.4%

Knowledge Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#11), Mistral 7B: 7.3 (#306)

Knowledge benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
GPQA Diamond	95.6%	15.2%
SimpleQA Verified	46.5%	—
LMArena Expert	—	1036
ARC (AI2) Challenge	—	78.6%
BoolQ	—	87.4%
MMLU	—	62.5%
OpenBookQA	—	79.8%
TriviaQA	—	75.2%

Multimodal Not comparable

Claude Sonnet 5.5: 53.2 (#5), Mistral 7B: —

Multimodal benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
Furniture Assembly	75%	—

Multilingual Not comparable

Claude Sonnet 5.5: —, Mistral 7B: 26.0 (#278)

Multilingual benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
LMArena Non-English	—	1012
LMArena Chinese	—	1009
LMArena French	—	1036
LMArena German	—	987
LMArena Japanese	—	878
LMArena Russian	—	1018
LMArena Spanish	—	1026

Instruction Following Not comparable

Claude Sonnet 5.5: —, Mistral 7B: 54.5 (#275)

Instruction Following benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
LMArena Instruction Following	—	1060

Long Context Not comparable

Claude Sonnet 5.5: —, Mistral 7B: 32.2 (#266)

Long Context benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
LMArena Longer Query	—	1060

Writing & Preference Not comparable

Claude Sonnet 5.5: —, Mistral 7B: 30.9 (#281)

Writing & Preference benchmarks
Benchmark	Claude Sonnet 5.5	Mistral 7B
LMArena Text	—	1090
LMArena Creative Writing	—	1068
LMArena Multi-Turn	—	1062

Frequently asked questions

Is Claude Sonnet 5.5 better than Mistral 7B?

Which is cheaper, Claude Sonnet 5.5 or Mistral 7B?

Mistral 7B is cheaper. It lists at $0.25 per million input tokens and $0.25 per million output tokens; Claude Sonnet 5.5 lists at $2 and $10.

Is Claude Sonnet 5.5 or Mistral 7B better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 65.5 versus 25.9 in the Noometry coding category.

Which has the bigger context window?

Claude Sonnet 5.5 does, with 1M tokens against 8K.

How many benchmarks do Claude Sonnet 5.5 and Mistral 7B share?

2 benchmarks have published results for both models. Claude Sonnet 5.5 has 16 scored results on Noometry and Mistral 7B has 37.