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 Goose on GPT-5.1-Codex Mini
Goose is an open-source AI agent that goes beyond code suggestions: it installs dependencies, runs and tests code, and automates whole engineering workflows from the terminal or its desktop app. Created by Block and now part of the Linux Foundation's Agentic AI Foundation alongside MCP, it is built to be model-agnostic. Opper ships in its provider list, so you pick Opper, paste your key, and Goose runs on any of 700+ models with a live model list.
RunGooseonin
GooseoninConnect Goose to GPT-5.1-Codex Mini
Add Opper in Goose
In Goose (v1.49 or later), run goose configure → Configure Providers → Opper, or in the desktop app open Settings → Models → Configure providers → Opper, then paste your Opper key (stored as OPPER_API_KEY). 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 Goose on other models
Step-by-step setup for running Goose 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