OpenAI o3 vs Mistral Medium

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

Mid-tier Mistral model between Small and Large. Strong coding capability at a moderate price point.

Input	$0.400/M
Output	$2.00/M
Context	128K tokens
Best For	Day-to-day coding, mid-complexity tasks, cost-performance balance

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

Scenario	OpenAI o3	Mistral Medium	Savings
Small Script (1K lines)	$1.55	$0.07	Mistral Medium saves $1.48 (95%)
Medium Feature (10K lines)	$11.50	$0.54	Mistral Medium saves $10.96 (95%)
Large Project (50K lines)	$57.50	$2.70	Mistral Medium saves $54.80 (95%)
Code Review (5K lines)	$2.75	$0.12	Mistral Medium saves $2.63 (96%)

Mistral Medium wins on both price and performance — $0.400/M input with a benchmark score of N/A/100.

For most developers, this is the clear choice between these two models.

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

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

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

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

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

First generation Sonnet. Balanced performance for general tasks.