GPT-5.3 Chat (GPT 5.3 Instant) is now available on AI Gateway.
This update focuses on tone, relevance, and conversational flow for more accurate answers, better-contextualized web results, and fewer unnecessary refusals and caveats. It also reduces hallucination rates and produces smoother and more direct responses.
To use this model, set model to
AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in observability, Bring Your Own Key support, and intelligent provider routing with automatic retries.
Learn more about AI Gateway, view the AI Gateway model leaderboard or try it in our model playground.
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This update focuses on tone, relevance, and conversational flow for more accurate answers, better-contextualized web results, and fewer unnecessary refusals and caveats. It also reduces hallucination rates and produces smoother and more direct responses.
To use this model, set model to
openai/gpt-5.3-chat in the AI SDK.AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in observability, Bring Your Own Key support, and intelligent provider routing with automatic retries.
Learn more about AI Gateway, view the AI Gateway model leaderboard or try it in our model playground.
Read more
Continue reading...