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Kimi K2.5 vs o3 mini
Comprehensive side-by-side LLM comparison
o3 mini offers 35.8K more tokens in context window than Kimi K2.5. o3 mini is $2.00 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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Moonshot AI
Kimi K2.5, released by Moonshot AI in January 2026, is an updated Mixture-of-Experts large language model with 1 trillion total parameters and 32 billion active parameters. It builds on Kimi K2 with improved coding performance across multiple languages and an expanded context window. Kimi K2.5 targets agentic development workflows, polyglot code generation, and open-source deployments requiring large-scale MoE reasoning.
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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.
11 months newer
o3 mini
OpenAI
2025-01-31
Kimi K2.5
Moonshot AI
2026-01
Pricing Comparison
Cost per million tokens (USD)
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Kimi K2.5
Input:$1.50
Output:$6.00
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o3 mini
Input:$1.10
Output:$4.40($2.00 cheaper)
Performance Metrics
Context window and performance specifications
Provider Availability & Performance
Available providers and their performance metrics
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Kimi K2.5
1 providers
Moonshot AI
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o3 mini
1 providers
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Kimi K2.5
Avg Score:0.0%
Providers:1
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o3 mini
Avg Score:0.0%
Providers:1