GPT-5 Chat (latest) by OpenRouter — Specs, Pricing & Capabilities | whichllm

Model ID openai/gpt-5-chat

Provider OpenRouter

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 -

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 -

Cache Write Cost / 1M tokens -