GPT-5.1 Codex Mini API Pricing Calculator

Track gpt-5.1-codex-mini pricing with instant alerts, compare providers easily, and stay ahead of cost fluctuations for lightweight automated coding workflows.

Released 13 November 2025, GPT-5.1 Codex Mini is a coding model from OpenAI that has been deprecated. It was replaced by GPT-5.6 Terra on 23 July 2026. A 400,000-token context window feeds responses of up to 100,000 tokens.

Not currently offered by any tracked provider. Who stopped, and its last prices

Last updated Sep 27, 2026

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Model Details

Released
Nov 13, 2025
Status
Deprecated(on Jul 23, 2026)
Context Length
400,000
Max Output
100,000
Superseded By
GPT-5.6 Terra

Where is GPT-5.1 Codex Mini a perfect fit?

gpt-5.1-codex-mini is built for fast, efficient coding tasks where low latency and low cost matter more than heavy reasoning. Ideal for:
- Everyday coding assistance in terminals and small IDE projects
- Quick bug fixes, linting, formatting, and short code edits
- Auto-generating shell commands and workflow scripts
- Lightweight agentic tasks that don’t require long-chain reasoning
- Integrating inexpensive code intelligence into developer tools

Quick Model Estimate

(USD 0.2500 per 1M tokens)
(USD 2.0000 per 1M tokens)

Your GPT-5.1 Codex Mini Cost Estimate

💰 Total Cost

—

for 1000 input + 1000 output tokens

📥 Input (1000 × $0.250000) —
📤 Output (1000 × $2.000000) —

Cost Breakdown

📥 Input 📤 Output

At the last price OpenAI charged, before it stopped on 23rd Jul 2026. No longer on offer.

Estimate with GPT-5.6 Terra →

Pricing

No provider we track currently offers GPT-5.1 Codex Mini.

No longer offered by

The last prices each provider charged for GPT-5.1 Codex Mini before it stopped offering it. These are no longer on offer. Each row links to that provider's price history.

Provider ↕
Ended ↕
Modality ↕
Service Tier ↕
Input Price
(per 1M tokens) ↕
Output Price
(per 1M tokens) ↕
Cached Input
(per 1M tokens) ↕
Context Size ↕
View
OpenAI LogoOpenAI23rd Jul 2026Model retiredTextStandard$0.2500$2.0000$0.0250400,000 tokens→

Recent changes

When GPT-5.1 Codex Mini was newly listed on a provider, moved to legacy or deprecated, or retired.

  1. Retired

    OpenAI retired GPT-5.1 Codex Mini, with GPT-5.6 Terra as the suggested replacement.

See all changes, new releases and retirements →

Other Models in the GPT-5.1 Family

GPT-5.1

Legacy

Multimodal · 400,000 context

GPT-5.1 Chat Latest

Deprecated

Chat · 128,000 context

GPT-5.1 Codex

Deprecated

Code · 400,000 context

GPT-5.1 Codex Max

Deprecated

Code · 400,000 context

FAQs about GPT-5.1 Codex Mini

What is GPT-5.1 Codex Mini's context window?

GPT-5.1 Codex Mini has a context window of 400,000 tokens, and returns up to 100,000 tokens in a single response.

Is GPT-5.1 Codex Mini still available?

GPT-5.1 Codex Mini is deprecated and was retired on 23 July 2026. The replacement is GPT-5.6 Terra.