Build advanced reasoning agents with GPT 5.4 Pro, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $30.00/1M input and $180.00/1M output tokens, native tool calling support. Access GPT 5.4 Pro via the NanoGPT API with up to 128K output tokens.
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GPT 5.4 Pro by NanoGPT costs $30.00 per 1M input tokens and $180.00 per 1M output tokens. Cached reads cost $3.00 per 1M tokens.