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  1. Models
  2. Text
  3. OpenAI

GPT 5.1 Codex Mini

Lightweight GPT-5.1 Codex path.

  • Reasoning
  • Vision

Added Nov 13, 2025

Pricing

Auto routing · per 1M tokens
Input
$0.25
Output
$2.00
Cache read
$0.025
Compare provider prices

Specifications

Context window
400K
Max output
128K

Benchmarks

No public benchmark scores for this model yet.

Providers

Auto routing is available for this model. Explicit provider selection is not available.

Auto
Auto
Recommended
$0.25$2.00$0.025N/AN/A
Batch API
ProviderInputOutputCached input
OpenAI
OpenAIgpt-5.1-codex-mini
$0.125/M$1.00/MN/A

Reliability

Related text models

Compare GPT 5.1 Codex Mini with similar models from the same provider or model family.

GPT 5.4 Mini

openai/gpt-5.4-mini

GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads.

GPT 5.3 Codex

openai/gpt-5.3-codex

Coding-focused GPT-5.3 variant with optimized routing.

GPT 5.2 Codex

openai/gpt-5.2-codex

Coding-focused GPT-5.2 variant with optimized routing.

GPT 5.1 Codex Max

openai/gpt-5.1-codex-max

Top-tier GPT-5.1 Codex route used when direct OpenAI is unavailable.

GPT 5.1 Codex

openai/gpt-5.1-codex

Coding-focused GPT-5.1 variant with optimized routing.

GPT 4.1 Mini

openai/gpt-4.1-mini

Mid-sized GPT 4.1, comparable to GPT4o with a far higher context window, at lower cost and with higher speed.