OpenAI
GPT-5 Chat
Chat-tuned GPT model for conversational assistance, writing, and tool workflows
Model facts
- Context window
- 4K tokens
- Maximum output
- 1K tokens
- Cheapest paid input
- $1.1 per 1M tokens
- Cheapest paid output
- $9 per 1M tokens
- Open weights
- no
- Providers
- 3
Capabilities and modalities
reasoning, tool calling, structured output, attachments, text, image.
Observed price history
- 2026-08-24: $1.1 input / $9 output per 1M tokens
API providers
- Poe — model id openai/gpt-5-chat; $1.1 input / $9 output per 1M tokens; provider documentation
- OrcaRouter (latest) — model id openai/gpt-5-chat-latest; $1.25 input / $10 output per 1M tokens; provider documentation
- Arena — model id gpt-5-chat; not published input / not published output per 1M tokens; provider documentation