Poe API

GPT-5.1-Codex-Mini

GPT‑5.1‑Codex‑Mini is a lightweight, fast, and efficient code‑generation model derived from GPT‑5.1‑Codex. It’s optimized for quick iterations, smaller environments, and edge applications—offering strong coding assistance with lower computational cost while maintaining accuracy and utility. Supports 400k tokens of input context. Optional parameters: Set reasoning effort: Select from `low`, `medium`, `high`. Medium reasoning effort is set by default.

OFFICIAL

Build with GPT-5.1-Codex-Mini using the Poe API

Start by creating an API key, for use with any bot on Poe:

Generate API key

Use it in these apps

See all

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Code samples

Responses API

import openai

client = openai.OpenAI(
    api_key = "YOUR_POE_API_KEY",  # or os.getenv("POE_API_KEY")
    base_url = "https://api.poe.com/v1",
)

response = client.responses.create(
    model = "gpt-5.1-codex-mini",
    input = "Write a Python function that reverses a string without using any built in string manipulation functions or libraries"
)

print(response.output_text)

See the full documentation for comprehensive guidance on getting started.