Comprehensive side-by-side LLM comparison
Claude Sonnet 4.6 leads with 9.2% higher average benchmark score. Kimi K2.5 offers 192 more tokens in context window than Claude Sonnet 4.6. Kimi K2.5 is $10.50 cheaper per million tokens. Claude Sonnet 4.6 supports multimodal inputs. Claude Sonnet 4.6 is available on 3 providers. Overall, Claude Sonnet 4.6 is the stronger choice for coding tasks.
Anthropic
Claude Sonnet 4.6 is a general-purpose language model from Anthropic, released in February 2026 as an update to the Sonnet 4 line that introduced adaptive thinking — a mode where the model automatically calibrates its reasoning depth based on task complexity rather than requiring manual configuration by the developer. The model accepts text and image inputs and integrates natively with web search and code execution tools, consolidating capabilities that previously required separate toolchain setup into a unified API surface. It became the primary workhorse model in the Claude 4 series for code assistance, agentic pipelines, and retrieval-augmented applications that benefit from built-in web access.
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.
1 month newer
Kimi K2.5
Moonshot AI
2026-01

Claude Sonnet 4.6
Anthropic
2026-02-17
Cost per million tokens (USD)
Claude Sonnet 4.6
Kimi K2.5
Context window and performance specifications
Average performance across 4 common benchmarks
Claude Sonnet 4.6
Kimi K2.5
Performance comparison across key benchmark categories
Claude Sonnet 4.6
Claude Sonnet 4.6
2025-08
Available providers and their performance metrics
Claude Sonnet 4.6
Anthropic
AWS Bedrock
Google Cloud Vertex AI
Kimi K2.5
Claude Sonnet 4.6
Kimi K2.5
Claude Sonnet 4.6
Kimi K2.5
Kimi K2.5
Moonshot AI