GPT 5.1 Codex Mini API Pricing 2026

Compare pricing, benchmarks, and providers for GPT 5.1 Codex Mini. Find the best value for your use case.

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Last updated: February 15, 2026 at 08:07 AM

Overview

GPT 5.1 Codex Mini was released on November 13, 2025. Pricing starts at $0.250 per million input tokens and $2.00 per million output tokens. The model supports a context window of up to 400K tokens. API access is available through OpenAI.

Context Window

400K

tokens

Pricing

Input$0.250

Output$2.00

Cached$0.025

per 1M tokens

Speed

Output114 tok/s

TTFT12.88s

median latency

Capabilities

VisionToolsCaching

Pricing Comparison

Compare GPT 5.1 Codex Mini with 10 similar models by price.

Current Pricing (per 1M tokens)

11 models

Provider	Model	Input $/M	Output $/M	Coding	MMLU	GPQA	Context	Actions
O OpenAI	GPT-5.1-Codex-Mini	$0.250	$2.000	83.6	82.0	81.3	400,000	Try
K Kwaipilot	KAT-Coder-Pro V1	$0.207	$0.828	74.7	81.3	76.4	256,000	Try
QW Qwen	Qwen VL Plus	$0.210	$0.630	—	—	—	131,072	Try
DS Deepseek	DeepSeek V3.1 Terminus	$0.210	$0.790	52.9	83.6	75.1	163,840	Try
QW Qwen	Qwen3 Coder 480B A35B (exacto)	$0.220	$1.000	58.5	78.8	61.8	262,144	Try
A Anthropic	Claude 3 Haiku	$0.250	$1.250	15.4	—	—	200,000	Try
TN Tngtech	DeepSeek R1T2 Chimera	$0.250	$0.850	—	—	—	163,840	Try
IC Inception	Mercury	$0.250	$1.000	—	—	—	128,000	Try
IC Inception	Mercury Coder	$0.250	$1.000	—	—	—	128,000	Try
BY Bytedance-seed	Seed 1.6	$0.250	$2.000	—	—	—	262,144	Try
TN Tngtech	R1T Chimera	$0.250	$0.850	—	—	—	163,840	Try

* Some models use tiered pricing based on prompt length. Displayed prices are for prompts ≤ 200k tokens.

Compare Providers

GPT 5.1 Codex Mini is available from multiple providers with different pricing and availability.

Providers

$0.250

Cheapest Input/M

$2.000

Cheapest Output/M

OpenAI

Best Price

Provider Pricing

2 models

Provider	Input $/M	Output $/M	Uptime
OpenAI Best Price	$0.250	$2.000	100.0%
A Azure Best Price	$0.250	$2.000	-

Provider pricing data sourced from OpenRouter and Helicone

Community Rankings

How does GPT 5.1 Codex Mini perform? Vote based on your experience.

Cost vs. Quality

Compare GPT 5.1 Codex Mini's benchmark performance against all models.

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GPT-5.1-Codex-Mini

Other models

Detailed Benchmark Scores

Intelligence

38.5 (88th pct)

Coding

36.4 (89th pct)

Math

91.7 (91th pct)

MMLU Pro

82.0 (72th pct)

GPQA

81.3 (86th pct)

LiveCodeBench

83.6 (92th pct)

AIME

Aider

Benchmark data from Artificial Analysis and HuggingFace Open LLM Leaderboard

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