ZenMuxGPT-5.3 Chat model ID, context window & pricing
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Quick facts
Model ID openai/gpt-5.3-chat
Source ZenMux
Context Window 128000
Pricing $1.75 input / $14.00 output per 1M tokens
Capabilities tool calling, temperature control
Model overview
GPT-5.3 Chat is an AI model from ZenMux with 128000 token context window and text input support.
Published pricing is $1.75 input and $14.00 output per 1M tokens.
- Workloads that use text inputs with text outputs.
- Agent and tool workflows that need function calling.
Model ID openai/gpt-5.3-chat
Provider ZenMux
Family -
Status -
Knowledge Cutoff 2025-08-31
Release Date 2026-03-20
Input Modalities text
Output Modalities text
Context Window 128000
Input Limit -
Output Limit 16380
Tool Calling Yes
Reasoning No
Structured Output -
Temperature Control Yes
Open Weights No
Input Cost / 1M tokens $1.75
Output Cost / 1M tokens $14.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens -
Cache Write Cost / 1M tokens -