Build advanced reasoning agents with GPT-5.1, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $1.38/1M input and $10.96/1M output tokens, native tool calling support. Access GPT-5.1 via the Cortecs API with up to 400K output tokens.
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GPT-5.1 by Cortecs costs $1.38 per 1M input tokens and $10.96 per 1M output tokens. Cached reads cost $0.16 per 1M tokens.