How much does GPT-5.1-Codex-Mini cost per token?

GPT-5.1-Codex-Mini is priced at $0.25 per million input tokens and $2.00 per million output tokens, per OpenRouter as of Jul 8, 2026.

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

GPT-5.1-Codex-Mini supports a context window of up to 400K tokens, per OpenAI.

What are the alternatives to GPT-5.1-Codex-Mini?

By OpenRouter usage, comparable models include Hy3, DeepSeek V4 Flash, and MiniMax M3. Side-by-side comparisons are linked in the alternatives table.

ModelsOpenAI

GPT-5.1-Codex-Mini

Name: GPT-5.1-Codex-Mini
Author: OpenAI

openrouter price docs

Context

400K

tokens

Released

Nov 13, 2025

on OpenRouter

Pricing

Price per million tokens

Input $/MTok

$0.25

OpenRouter · Jul 8, 2026

Output $/MTok

$2.00

OpenRouter · Jul 8, 2026

Cache read $/MTok

$0.025

OpenRouter

Current GPT-5.1-Codex-Mini prices per million tokens across tracked sources.
Source	Tracked slug	In $/MTok	Out $/MTok	Cache read	Cache write	Context	Effective	Last Δ (in)
OpenRouter	openai/gpt-5.1-codex-mini	$0.25	$2.00	$0.025	—	400K	Jul 8, 2026	—
models.dev	nano-gpt/openai/gpt-5.1-codex-mini	$0.25	$2.00	—	—	400K	Jul 8, 2026	11.1%
llm-prices.com	gpt-5.1-codex-mini	$0.25	$2.00	$0.025	—	—	Jul 8, 2026	—

latest tracked price per source · Δ = most recent input-price move within that source

3 sources tracking

Input $/MTok

Output $/MTok

per-source step lines · $/MTok

history since Jan 1, 2023

Specs

Context & availability

GPT-5.1-Codex-Mini specifications.
Provider	OpenAI
Context window	400K tokens
Listed on OpenRouter	Nov 13, 2025
Tracked price sources	llm-prices.com · OpenRouter · models.dev
OpenRouter slugs	openai/gpt-5.1-codex-mini · openai/gpt-5.1-codex-mini-20251113

source: OpenRouter model catalog + tracked price feeds

id: gpt-5-1-codex-mini

Usage

Share of OpenRouter tokens

90-day daily

usage share pending — this model isn't in the tracked OpenRouter model rankings yet

Benchmarks

Benchmark results

Benchmark scores for GPT-5.1-Codex-Mini.
Benchmark	Configuration	Score	Date	Source
no benchmark results attributed to GPT-5.1-Codex-Mini yet

scores as published by each benchmark; configurations differ — compare within a row's benchmark only

Alternatives

Similar models

Alternatives to GPT-5.1-Codex-Mini by OpenRouter usage-rank proximity.
#	Model	Tokens/day	7d Δ	Head-to-head
1	Hy3Tencent	857.5B	—	vs GPT-5.1-Codex-Mini
2	DeepSeek V4 FlashDeepSeek	806.2B	6.6%	vs GPT-5.1-Codex-Mini
3	MiniMax M3MiniMax	665.9B	9.8%	vs GPT-5.1-Codex-Mini
5	DeepSeek V4 ProDeepSeek	530.6B	50.5%	vs GPT-5.1-Codex-Mini

ranked by OpenRouter usage-rank proximity

snapshot Jul 7, 2026

FAQ

GPT-5.1-Codex-Mini FAQ

How much does GPT-5.1-Codex-Mini cost per token?: GPT-5.1-Codex-Mini is priced at $0.25 per million input tokens and $2.00 per million output tokens, per OpenRouter as of Jul 8, 2026.
What is GPT-5.1-Codex-Mini's context window?: GPT-5.1-Codex-Mini supports a context window of up to 400K tokens, per OpenAI.
What are the alternatives to GPT-5.1-Codex-Mini?: By OpenRouter usage, comparable models include Hy3, DeepSeek V4 Flash, and MiniMax M3. Side-by-side comparisons are linked in the alternatives table.

Alerts

Track GPT-5.1-Codex-Mini

Email me when GPT-5.1-Codex-Mini's price moves or it gets deprecated.