Is GPT-4o better than Mistral Small 3 for coding?

GPT-4o scores 75 overall vs Mistral Small 3's 42. GPT-4o has stronger benchmark performance, but pricing also matters — GPT-4o costs $2.50/M input vs $0.100/M for Mistral Small 3.

Which is cheaper: GPT-4o or Mistral Small 3?

Mistral Small 3 is cheaper per million input tokens at $0.10/M vs $2.50/M.

What is the price-performance ratio of GPT-4o vs Mistral Small 3?

Based on benchmark scores, GPT-4o costs $0.033 per score point while Mistral Small 3 costs $0.002 per score point. Mistral Small 3 offers better value.

GPT-4o vs Mistral Small 3

Performance benchmarks + pricing comparison — updated April 2026

GPT-4o

OpenAI

OpenAI's flagship multimodal model. Strong coding and reasoning at competitive pricing.

Input	$2.50/M
Output	$10.00/M
Context	128K tokens
Best For	General coding, multimodal tasks, chatbots
Benchmark	75/100

Mistral Small 3

Mistral

Mistral's cost-effective model. Very affordable for general-purpose tasks.

Input	$0.100/M
Output	$0.300/M
Context	32K tokens
Best For	High-volume tasks, cost optimization
Benchmark	42/100

Benchmark Performance Comparison

Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.

Benchmark	GPT-4o	Mistral Small 3	Leader
Overall Score	75	42	GPT-4o leads by 33pts
SWE-bench Verified	70	35	GPT-4o leads by 35pts
LiveCodeBench	78	44	GPT-4o leads by 34pts
HumanEval	90	65	GPT-4o leads by 25pts
BigCodeBench	62	28	GPT-4o leads by 34pts

Cost Comparison by Scenario

Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.

Scenario	GPT-4o	Mistral Small 3	Savings
Small Script (1K lines)	$0.41	$0.01	Mistral Small 3 saves $0.39 (97%)
Medium Feature (10K lines)	$3.06	$0.10	Mistral Small 3 saves $2.97 (97%)
Large Project (50K lines)	$15.31	$0.47	Mistral Small 3 saves $14.84 (97%)
Code Review (5K lines)	$0.78	$0.02	Mistral Small 3 saves $0.76 (97%)

Value Analysis (Price per Benchmark Score Point)

Lower is better — how much you pay for each point of benchmark performance.

Model	Overall Score	Price per Score Point	Verdict
GPT-4o	75	$0.033/pt	Higher cost per point
Mistral Small 3	42	$0.002/pt	Better value

Mistral Small 3 delivers the best value at $0.002 per score point.

Strengths & Weaknesses

GPT-4o

+ Strong general-purpose
+ Good multimodal
- Less consistent on coding than Claude

Mistral Small 3

+ Ultra-cheap
- Very limited capabilities

Verdict

Mistral Small 3 is cheaper at $0.100/M, but GPT-4o scores higher on benchmarks (75 vs 42).

Choose Mistral Small 3 for cost-sensitive projects, GPT-4o when performance matters most.

Compare with Other Models

Claude Sonnet 4

Anthropic

Anthropic's balanced model for coding and general tasks. Best price-performance ratio in the Claude family.

$3.00/M input $15.00/M output ~$4.66 per medium feature

Claude Opus 4

Anthropic

Anthropic's most powerful model. Best for complex reasoning and challenging coding tasks.

$15.00/M input $75.00/M output ~$23.29 per medium feature

Claude 3.5 Sonnet

Anthropic

Previous generation Sonnet. Still excellent for coding tasks at the same price point.

$3.00/M input $15.00/M output ~$4.66 per medium feature

Claude 3.5 Haiku

Anthropic

Fast, cost-effective model for high-volume tasks. Great for code review and simple queries.

$0.800/M input $4.00/M output ~$1.24 per medium feature

Claude 3 Opus

Anthropic

First generation Opus. Highest reasoning capability in the Claude 3 family.

$15.00/M input $75.00/M output ~$20.25 per medium feature

Claude 3 Sonnet

Anthropic

First generation Sonnet. Balanced performance for general tasks.

$3.00/M input $15.00/M output ~$4.05 per medium feature