GPT-5.1 Codex Mini by OpenAI, fast, cost-efficient code model with a 272K context for everyday development tasks.
Available on
Pricing from$0.25/ 1M input$2.00/ 1M output$0.03/ 1M cache read400Kcontext
Privacy
- ZDR
- Training
- No
- Region
- EU
Run OmniRoute on GPT-5.1-Codex Mini
OmniRoute is an open-source gateway you run yourself: one endpoint in front of 350 providers, with quota-aware fallback, token compression, and MCP support, built for Claude Code, Codex, Cursor, OpenCode, Cline and Copilot. Opper is listed in its provider catalogue, so you paste your Opper key once under Providers and every agent you point at OmniRoute can pick from Opper's 700+ models, EU-hosted routes included, alongside whatever else you have configured.
RunOmniRouteonin
OmniRouteoninConnect OmniRoute to GPT-5.1-Codex Mini
Add Opper in OmniRoute
In OmniRoute (v3.8.51 or later), open Providers → API key providers, pick Opper and paste your key; on older builds add a custom OpenAI-compatible provider with base URL https://api.opper.ai/v3/compat. Then pick GPT-5.1-Codex Mini.
Model id
Where you can run it
GPT-5.1-Codex Mini runs on the routes below. Route only to EU providers when your data has to stay in Europe.
| Provider | Region | Zero data retention | Training | Input | Output | Cache read |
|---|---|---|---|---|---|---|
| EU | No | $0.25 | $2.00 | $0.03 |
The model
Run OmniRoute on other models
Step-by-step setup for running OmniRoute on each of these models through Opper.
Claude Haiku 5.5Mistral Large 4Gemini 4 ArgonGPT-6 SolGPT-6 LunaClaude Opus 5.5Grok 4.7MiMo V2.6 ProMiMo V2.6 FlashLing-3.0-flash-FinDeepSeek V4.1 FlashLing-3.0-flash-VLGPT-6 AstraQwen3.8-MaxGemini 3.8 FlashMuse Spark 1.3 ContributorClaude Fable 5.1GLM-5.3-FlashQwen3.8 Flash-NextGLM-5.3Qwen3.8 27BDeepSeek V4 ProGemini 3.7 FlashGrok 4.6Qwen3.8-2.4T-A95BInkling-SmallClaude Opus 5Gemini 3.6 FlashKimi K3GPT-5.6 SolGPT-5.6 TerraGPT-5.6 LunaGrok 4.5Claude Sonnet 5GLM-5.2Kimi K2.7 CodeClaude Fable 5MiniMax M3Claude Opus 4.8Qwen3.7-MaxKimi K2.6Claude Opus 4.7GLM 5.1Gemini 3.1 Pro PreviewClaude Sonnet 4.6GLM 4.7GPT-5Grok 4.20 ReasoningDeepSeek V4 Flash VisionHy4 PreviewQwen3.8 FlashMiniMax H3SCX-coderMAGPiEGreen LGreen RSee all 700+ models
More apps on Opper
Claude Code
Anthropic's terminal coding agent. Run it on any model on Opper, not just Claude.
Coding
opper launch claude
Codex
OpenAI's open-source coding CLI. Run it on any model on Opper.
Coding
opper launch codex
DeepSeek Harness
DeepSeek's open-source coding agent. Add Opper as a custom provider to run it on any model, not just DeepSeek's.
Coding
OpenAI-compatible