OpenAI announces GPT-5.2, a frontier model with advanced reasoning, long-context understanding, coding, and vision capabilities, available in ChatGPT and the OpenAI API.

New model

Where to run it

GPT-5.4, Now Live in Harvey

GPT-5.4 now available in Harvey for legal tasks.

Harvey5 Mar

Upcoming retirement of older OpenAI models

OpenAI retiring five GPT-5 model versions on October 24, 2026

Perplexity23 days ago

How it measures

Artificial Analysis · Intelligence Index · Xhigh

30.4118thof 694 models

Math index99 · 1st

Median 12.5Top 57.6

Benchmarks, as Artificial Analysis ran them

90%GPQA Diamond
38%Humanity's Last Exam
47%Terminal-Bench Hard
89%LiveCodeBench
99%AIME 2025
85%τ²-Bench
87%MMLU-Pro
75%IFBench
83%Long context reasoning

Per 1M tokens: $1.75 in · $14.00 out
Context: 400K tokens

LMArena · Text102ndof 416

1Gemini 4 Argon (High)
2Muse Wonder (Max)
3Claude Opus 5.5 (High)
4Claude Fable 5 (High)

gpt-5.2-high · 1,437 (1,434–1,441) · 49,655 votes

Rated by versionGPTRated 18 points below GPT-5.1; GPT-5.5 rates 44 points higher.

GPT-5.2 · 1,437 (1,434–1,441) · 102nd

Against list priceRating for the price

GPT-5.2 · 1,437 · $4.81 per 1M tokens ($1.75 in, $14.00 out) · 400K context

LMArena, CC BY 4.0, 15 October 2026 · prices OpenRouter, list price blended 3:1, read 18 October 2026 · Artificial Analysis, read 18 October 2026

Everything else, by date

GPT-5.2 derives a new result in theoretical physicsResearch paper13 Feb
Advancing science and math with GPT-5.2Model update11 Dec
Update to GPT-5 System Card: GPT-5.2Model update11 Dec

About the model

Lab: OpenAI
Variants: GPT-5.2-Codex, GPT-5.2 Chat, GPT-5.2 Pro
Released: 11 December 2025, per models.dev
OpenRouter: Listed 10 December 2025openai/gpt-5.2

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