reasoningReleased 2026-01

GPT-5.2-Codex

By OpenAI · Code-specialised agentic workloads.

Input / 1M

$1.75

Output / 1M

$14.00

Context

400K tokens

Max output

128K tokens

GPT-5.2-Codex pricing

GPT-5.2-Codex costs $1.75 per million input tokens and $14.00 per million output tokens at standard API rates. That makes it cheaper than 9 of 25 other tracked models on input.

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GPT-5.2-Codex benchmarks

Terminal-Bench 2.183.4%

SWE-bench Verified82.6%

Ranks #2 on SWE-bench Verified among tracked models.

Specs

Maker: OpenAI
Category: reasoning
Released: 2026-01
Modalities: text
Open weights: No (proprietary API)
Context window: 400K tokens
Max output: 128K tokens

Official API docs ↗

Compare GPT-5.2-Codex with

GPT-5.5 Pro

OpenAI · $30.00/$180.00 per 1M

DeepSeek-R1

DeepSeek · $0.55/$2.19 per 1M

Grok 4.3

xAI · $1.25/$2.50 per 1M

GPT-5.5

OpenAI · $5.00/$30.00 per 1M

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Data verified 2026-06-20. Prices are standard USD API rates per 1M tokens.