Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 is available on 2 providers. Both models have their strengths depending on your specific coding needs.
Anthropic
Claude Sonnet 4.5 was developed to bridge human thinking and machine assistance, allowing people to work with language and tools in a more conversational and natural way. Built with a focus on turning ideas into results, it represents an evolution in making AI feel less mechanical while maintaining strong capabilities across reasoning, coding, and collaborative tasks.
Moonshot AI
Kimi K1.5 was developed by Moonshot AI as an advanced language model with extended context capabilities, designed to handle long documents and conversations. Built to excel at tasks requiring comprehension of extensive information, it represents Moonshot's approach to long-context language understanding.
8 months newer

Kimi-k1.5
Moonshot AI
2025-01-20

Claude Sonnet 4.5
Anthropic
2025-09-29
Context window and performance specifications
Claude Sonnet 4.5
2025-01-31
Available providers and their performance metrics

Claude Sonnet 4.5
Anthropic
ZeroEval


Claude Sonnet 4.5

Kimi-k1.5

Claude Sonnet 4.5

Kimi-k1.5
Kimi-k1.5