GPT-5.2 Codex

OpenAIMCP Tool CallReasoning
openai/gpt-5.2-codexClosed API

Code-specialist GPT for repository edits, reviews, and long-running software agents

Benchmark Pricing$0.14 / 1M in$1.14 / 1M out
Context: 400,000 tokens•Max Output: 128,000 tokens•Knowledge: 2025-08-31•Released: 2025-12-11

TECHNICAL SPECIFICATIONS

Context Window400,000400K tokens
Max Output128,000128K tokens
LicenseProprietaryCloud API only
Input Modalities
TextVisionPDF
Function / Tool CallingSupported (MCP Ready)
Structured OutputsGuaranteed Schema

MODEL CONTEXT PROTOCOL (MCP) READINESS

✓ GPT-5.2 Codex natively supports OpenAI / Anthropic format tool calling and is fully compatible with MCP servers and agent loops.

MCP Context Window Recommendations

With a context capacity of 400,000 tokens, this model can handle moderately large MCP tool definitions and multi-turn conversation logs comfortably.

STANDARDIZED BENCHMARKS & EVALS

SWE-Bench Proresolve rate
41.04

API CALL INVOCATION EXAMPLE

// Example: Calling GPT-5.2 Codex via OpenAI SDK
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.OPENAI_API_KEY,
});

const response = await client.chat.completions.create({
  model: "openai/gpt-5.2-codex",
  messages: [{ role: "user", content: "Hello! Can you inspect MCP tools?" }],
});

console.log(response.choices[0].message.content);

PRICING BY PROVIDER

15 providers
QiHanggpt-5.2-codex
$0.14 / $1.14
NanoGPTopenai/gpt-5.2-codex
$1.75 / $14.00$0.17 cache
Vivgridgpt-5.2-codex
$1.75 / $14.00$0.17 cache
LLM Gatewayazure/gpt-5.2-codex
$1.75 / $14.00$0.17 cache
Poeopenai/gpt-5.2-codex
$1.60 / $13.00$0.16 cache
AIHubMixgpt-5.2-codex
$1.75 / $14.00$0.17 cache
Abacusgpt-5.2-codex
$1.75 / $14.00$0.17 cache
Vercel AI Gatewayopenai/gpt-5.2-codex
$1.75 / $14.00$0.17 cache
OpenCodegpt-5.2-codex
$1.75 / $14.00$0.17 cache
Eden AIazure/gpt-5.2-codex
$1.75 / $14.00$0.17 cache
Ofoxopenai/gpt-5.2-codex
$1.75 / $14.00$0.18 cache
Azure Cognitive Servicesgpt-5.2-codex
$1.75 / $14.00$0.17 cache
Kilo Gatewayopenai/gpt-5.2-codex
$1.75 / $14.00$0.17 cache
ZenMuxopenai/gpt-5.2-codex
$1.75 / $14.00$0.17 cache
DevPass (LLM Gateway)gpt-5.2-codex
$1.75 / $14.00$0.17 cache

Rates in USD per 1M tokens. Rates synchronized from models.dev public catalog.

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