GPT-5.1 Codex Mini API via TokenMix

Use GPT-5.1 Codex Mini from OpenAI as a chat model through the TokenMix AI API relay and multi-model gateway.

GPT-5.1 Codex Mini is a lightweight coding model balancing performance and cost with 400K context.

API access

  • Base URL: https://api.tokenmix.ai/v1
  • Model ID: gpt-5.1-codex-mini
  • OpenAI SDK compatible. Change the base URL and use your TokenMix API key.

Pricing

Input $0.2425/M tokens, output $1.94/M tokens

Capabilities

Function calling, JSON mode, Streaming

Model specs

  • Context: 400K tokens
  • Max output: 128K tokens

Availability

2/2 available API endpoints are healthy right now.

Start using this model

Create an API key, top up from $1 when needed, and call this model through the TokenMix OpenAI-compatible endpoint.

Create API key · View pricing · Quickstart