GPT-5.3 Chat | Sulat AI Models

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GPT-5.3 Chat | Sulat AI Models

Model details

GPT-5.3 Chat

Find out what this model does, when it was released, and which provider serves it.

ZenMuxopenai/gpt-5.3-chat

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Quick Info

Provider: ZenMux
Model key: openai/gpt-5.3-chat
Release date: Mar 20, 2026
Last updated: Mar 20, 2026
Knowledge: 2025-08-31
Input modalities: text
Output modalities: text
Capabilities: Tool calling, Attachments, Temp controls
Cost summary: In $1.75 · Out $14.00
Limit summary: 128,000 token context window

Cost

Input token cost: $1.75
Output token cost: $14.00

Limits

Output tokens: 16,380 tokens
Context window: 128,000 tokens

Provider overrides

{
  "api": "https://zenmux.ai/api/v1",
  "npm": "@ai-sdk/openai"
}