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Kimi K2 Thinking vs o3 mini
Comprehensive side-by-side LLM comparison
o3 mini offers 35.8K more tokens in context window than Kimi K2 Thinking. Both models have similar pricing. Both models have their strengths depending on your specific coding needs.
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Moonshot AI
Kimi K2 Thinking, released by Moonshot AI on November 6, 2025, is a reasoning-focused variant of Kimi K2 with 1 trillion total parameters and 32 billion active parameters, featuring extended chain-of-thought processing for complex problem solving. It builds on K2's agentic coding strengths with additional capabilities for mathematical and scientific reasoning. Kimi K2 Thinking targets open-source deployments requiring deep, deliberate reasoning across coding and analytical domains.
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OpenAI
OpenAI o3 mini, released by OpenAI in January 2025, is a compact reasoning model from the o3 family designed for efficient, cost-effective STEM problem-solving. It features a 200K token context window and adjustable chain-of-thought effort settings, allowing developers to trade reasoning depth for speed. o3 mini targets science, mathematics, and coding applications where lower inference cost and faster response times are a priority.
9 months newer
o3 mini
OpenAI
2025-01-31
Kimi K2 Thinking
Moonshot AI
2025-11-06
Pricing Comparison
Cost per million tokens (USD)
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Kimi K2 Thinking
Input:$1.00
Output:$4.00($0.50 cheaper)
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o3 mini
Input:$1.10
Output:$4.40
Performance Metrics
Context window and performance specifications
Provider Availability & Performance
Available providers and their performance metrics
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Kimi K2 Thinking
1 providers
Moonshot AI
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o3 mini
1 providers
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Kimi K2 Thinking
Avg Score:0.0%
Providers:1
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o3 mini
Avg Score:0.0%
Providers:1