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Kimi K2 Thinking vs o3 Pro
Comprehensive side-by-side LLM comparison
o3 Pro offers 35.8K more tokens in context window than Kimi K2 Thinking. Kimi K2 Thinking is $95.00 cheaper per million tokens. o3 Pro supports multimodal inputs. 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-pro, released by OpenAI in June 2025, is an extended reasoning model from the o3 family that applies more compute per response to deliver deeper, more thorough answers on complex problems. It features a 200K token context window, 100K maximum output tokens, and vision capabilities. o3-pro targets research-grade reasoning tasks, extended coding sessions, and applications where accuracy on difficult problems justifies higher inference cost and latency.
4 months newer
o3 Pro
OpenAI
2025-06-10
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($95.00 cheaper)
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o3 Pro
Input:$20.00
Output:$80.00
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 Pro
1 providers
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Kimi K2 Thinking
Avg Score:0.0%
Providers:1
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o3 Pro
Avg Score:0.0%
Providers:1