Merge GatewayGPT-5 Chat (latest) model ID, context window & pricing
gpt-codex
Quick facts
Model ID openai/gpt-5-chat-latest
Source Merge Gateway
Context Window 400000
Pricing $1.25 input / $10.00 output per 1M tokens
Capabilities reasoning, structured output, temperature control
Model overview
GPT-5 Chat (latest) is an AI model from Merge Gateway with 400000 token context window and text, image input support.
Published pricing is $1.25 input and $10.00 output per 1M tokens.
- Workloads that use text, image inputs with text outputs.
- Reasoning-heavy prompts where stepwise problem solving matters.
Model ID openai/gpt-5-chat-latest
Provider Merge Gateway
Family gpt-codex
Status -
Knowledge Cutoff 2024-09-30
Release Date 2025-08-07
Input Modalities text, image
Output Modalities text
Context Window 400000
Input Limit 272000
Output Limit 128000
Tool Calling No
Reasoning Yes
Structured Output Yes
Temperature Control Yes
Open Weights No
Input Cost / 1M tokens $1.25
Output Cost / 1M tokens $10.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens $0.12
Cache Write Cost / 1M tokens -