Is OpenAI o3 better than Mistral Large 2 for coding?

OpenAI o3 scores 85 overall vs Mistral Large 2's 65. OpenAI o3 has stronger benchmark performance, but pricing also matters — OpenAI o3 costs $10.00/M input vs $2.00/M for Mistral Large 2.

Which is cheaper: OpenAI o3 or Mistral Large 2?

Mistral Large 2 is cheaper per million input tokens at $2.00/M vs $10.00/M.

What is the price-performance ratio of OpenAI o3 vs Mistral Large 2?

Based on benchmark scores, OpenAI o3 costs $0.167 per score point while Mistral Large 2 costs $0.031 per score point. Mistral Large 2 offers better value.

OpenAI o3 vs Mistral Large 2

Performance benchmarks + pricing comparison — updated April 2026

OpenAI o3

OpenAI

Next generation reasoning model. Improved coding and math over o1.

Input	$10.00/M
Output	$40.00/M
Context	200K tokens
Best For	Advanced coding, complex problem-solving
Benchmark	85/100

Mistral Large 2

Mistral

Mistral's flagship model. Strong multilingual and coding capability.

Input	$2.00/M
Output	$6.00/M
Context	128K tokens
Best For	Enterprise coding, multilingual tasks
Benchmark	65/100

Benchmark Performance Comparison

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

Benchmark	OpenAI o3	Mistral Large 2	Leader
Overall Score	85	65	o3 leads by 20pts
SWE-bench Verified	82	58	o3 leads by 24pts
LiveCodeBench	88	66	o3 leads by 22pts
HumanEval	96	84	o3 leads by 12pts
BigCodeBench	74	52	o3 leads by 22pts

Cost Comparison by Scenario

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

Scenario	OpenAI o3	Mistral Large 2	Savings
Small Script (1K lines)	$1.55	$0.25	Mistral Large 2 saves $1.30 (84%)
Medium Feature (10K lines)	$11.50	$1.90	Mistral Large 2 saves $9.60 (83%)
Large Project (50K lines)	$57.50	$9.50	Mistral Large 2 saves $48.00 (83%)
Code Review (5K lines)	$2.75	$0.50	Mistral Large 2 saves $2.25 (82%)

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
OpenAI o3	85	$0.167/pt	Higher cost per point
Mistral Large 2	65	$0.031/pt	Better value

Mistral Large 2 delivers the best value at $0.031 per score point.

Strengths & Weaknesses

OpenAI o3

+ Latest reasoning model
+ Top-tier across all benchmarks
- Very expensive
- Slow

Mistral Large 2

+ European data residency
+ Good value
- Smaller ecosystem

Verdict

Mistral Large 2 is cheaper at $2.00/M, but OpenAI o3 scores higher on benchmarks (85 vs 65).

Choose Mistral Large 2 for cost-sensitive projects, OpenAI o3 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