GPT 5.1 Instant
The Instant variant is the fast, chat-first option in the 5.1 line. It favors low latency and solid instruction following, with long context, function calling, and reliable JSON. For most everyday prompts, the system router selects Instant by default.
- Type
- Multimodal
- Weights
- Closed
Related tools
1
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About OpenAI
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OpenAI develops and deploys general-purpose artificial intelligence models, products, and developer platforms.
Tools using GPT 5.1 Instant
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