Build advanced reasoning agents with claude-sonnet-4-5-20250929-thinking, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $3.00/1M input and $15.00/1M output tokens, native tool calling support. Access claude-sonnet-4-5-20250929-thinking via the 302.AI API with up to 64K output tokens.
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claude-sonnet-4-5-20250929-thinking by 302.AI costs $3.00 per 1M input tokens and $15.00 per 1M output tokens.