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Claude Opus 4.6 vs Kimi K2
Comprehensive side-by-side LLM comparison
Claude Opus 4.6 leads with 35.6% higher average benchmark score. Claude Opus 4.6 offers 63.8K more tokens in context window than Kimi K2. Kimi K2 is $26.90 cheaper per million tokens. Claude Opus 4.6 supports multimodal inputs. Claude Opus 4.6 is available on 3 providers. Overall, Claude Opus 4.6 is the stronger choice for coding tasks.
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Anthropic
Claude Opus 4.6, released by Anthropic in February 2026, is a large language model from the Claude 4 family designed for complex agent orchestration, extended reasoning, and long-form code generation. It features a 200K token context window (extendable to 1M tokens in beta), 128K maximum output tokens, native image understanding, and extended thinking with both standard and adaptive effort modes. Opus 4.6 targets multi-step agentic workflows, parallel tool use, and applications requiring sustained reasoning over large contexts.
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Moonshot AI
Kimi K2, released by Moonshot AI on July 11, 2025, is an open-weight Mixture-of-Experts large language model with 1 trillion total parameters and 32 billion active parameters per inference. It features a 256K token context window (expanded from 128K in an September 2025 update) and demonstrated strong performance on agentic coding benchmarks. Kimi K2 targets software engineering agents, tool-use workflows, and open-source deployments under a modified MIT license.
6 months newer
Kimi K2
Moonshot AI
2025-07-11
Claude Opus 4.6
Anthropic
2026-02
Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.6
Input:$5.00
Output:$25.00
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Kimi K2
Input:$0.60
Output:$2.50($26.90 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude Opus 4.6
Average Score:59.5%(+35.6%)
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Kimi K2
Average Score:23.9%
Performance comparison across key benchmark categories
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Claude Opus 4.6
Tool Use59.5%(+35.6%)
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Kimi K2
Tool Use23.9%
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Knowledge Cutoff
Training data recency comparison
Claude Opus 4.6
2025-05
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Claude Opus 4.6
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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Kimi K2
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Claude Opus 4.6
Avg Score:59.5%(+35.6%)
Providers:3
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Kimi K2
Avg Score:23.9%
Providers:1