GPT 5 Codex API Pricing 2026

Compare pricing, benchmarks, and providers for GPT 5 Codex. Find the best value for your use case.

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Last updated: February 9, 2026 at 08:06 AM

Overview

GPT 5 Codex was released on September 23, 2025. Pricing starts at $1.25 per million input tokens and $10.00 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$1.25

Output$10.00

Cached$0.125

per 1M tokens

Speed

Output339 tok/s

TTFT14.88s

median latency

Capabilities

VisionToolsCaching

Pricing Comparison

Compare GPT 5 Codex 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 Codex	$1.250	$10.000	84.0	86.5	83.7	400,000	Try in Playground
O OpenAI	o4 Mini	$1.100	$4.400	85.9	83.2	78.4	200,000	Try in Playground
O OpenAI	o3 Mini High	$1.100	$4.400	73.4	80.2	77.3	200,000	Try in Playground
O OpenAI	o3 Mini	$1.100	$4.400	71.7	79.1	74.8	200,000	Try in Playground
M Nvidia	Llama 3.1 Nemotron 70B Instruct	$1.200	$1.200	16.9	69.0	46.5	131,072	Try in Playground
QW Qwen	Qwen3 Max	$1.200	$6.000	76.7	84.1	76.4	256,000	Try in Playground
G Google	Gemini 2.5 Pro Preview 05-06	$1.250	$10.000	77.0	83.7	82.2	1,048,576	Try in Playground
O OpenAI	GPT-5.1-Codex-Max	$1.250	$10.000	—	—	—	400,000	Try in Playground
O OpenAI	GPT-5.1	$1.250	$10.000	49.4	80.1	64.3	400,000	Try in Playground
O OpenAI	GPT-5.1 Chat	$1.250	$10.000	—	—	—	128,000	Try in Playground
O OpenAI	GPT-5.1-Codex	$1.250	$10.000	84.9	86.0	86.0	400,000	Try in Playground

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

Compare Providers

GPT 5 Codex is available from multiple providers with different pricing and availability.

Providers

$1.250

Cheapest Input/M

$10.000

Cheapest Output/M

OpenAI

Best Price

Provider Pricing

1 models

Provider	Input $/M	Output $/M	Uptime
OpenAI Best Price	$1.250	$10.000	-

Provider pricing data sourced from OpenRouter and Helicone

Community Rankings

How does GPT 5 Codex perform? Vote based on your experience.

Cost vs. Quality

Compare GPT 5 Codex's benchmark performance against all models.

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GPT-5 Codex

Other models

Detailed Benchmark Scores

Intelligence

44.5 (96th pct)

Coding

38.9 (94th pct)

Math

98.7 (99th pct)

MMLU Pro

86.5 (94th pct)

GPQA

83.7 (91th pct)

LiveCodeBench

84.0 (93th pct)

AIME

Aider

Benchmark data from Artificial Analysis and HuggingFace Open LLM Leaderboard

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