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GPT-5.1 Codex mini

Canonical ID: impossibl/openai/gpt-5.1-codex-mini

Coding-optimized GPT model for repository edits, reviews, and agentic software work

Reasoning: Yes Tool use: Yes

Overview

text image
Provider
Impossibl logo Impossibl
Family
gpt-codex
Release date
2025-11-13
Last updated
2025-11-13
Input modalities
text, image
Output modalities
text

Pricing and Limits

Token pricing

Input
$0.25/1M
Output
$2/1M
Cached input
N/A
Currency: USD

Context and output

Context window
400,000
Max output tokens
128,000
Qualified ID
impossibl/openai/gpt-5.1-codex-mini

Model Summary

GPT-5.1 Codex mini is a model listing in the Impossibl provider catalog. It is categorized under the gpt-codex family.

The model supports text, image modalities across input/output paths. Reported context capacity is 400,000. Pricing is listed at $0.25/1M input and $2/1M output.

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