GPT-5.2

ModelActive

by OpenAI · family “gpt”

GPT-5.2 is the latest frontier-grade model in the GPT-5 series, offering stronger agentic and long context perfomance compared to GPT-5.1. It uses adaptive reasoning to allocate computation dynamically, responding quickly... (description from the OpenRouter listing)

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Epoch Capabilities Index

153.4 #36 of 268

90% CI 151.7 – 155.2

Listing ↗

Released

11 Dec 2025

Context window

400K tokens

Max output

128K tokens

Input $ / 1M tokens

$1.75

Output $ / 1M tokens

$14.0

Cached input $ / 1M

$0.17

Each benchmark shown separately with its own source

Benchmark results (15)

All benchmarks

Benchmark	Domain	Score	vs best recorded	Setting	Run	Source
Mystery Game Puzzles	games	23.0% ±4.2	27%	high	6 Aug 2026	Epoch ↗
CL-bench	long-context	18.1%	65%	high	—	External ↗
Chess Puzzles	games	40.0% ±4.9	56%	high	11 Dec 2025	Eval log ↗
SimpleQA Verified	knowledge	34.3% ±1.5	45%	high	27 Aug 2026	Eval log ↗
FrontierMath-Tier-4-2025-07-01-Privatesuperseded	math	18.8% ±5.6	39%	high	11 Dec 2025	Epoch ↗
GSO-Bench	coding	27.5%	58%	high	—	External ↗
ARC-AGI-2	reasoning	43.3%	46%	high	—	External ↗
METR Time Horizons	agents	75.3%	88%	high	—	External ↗
FrontierMath-2025-02-28-Privatesuperseded	math	40.3% ±2.9	77%	high	11 Dec 2025	Epoch ↗
VPCT	multimodal	67.0%	74%	high	—	External ↗
OTIS Mock AIME 2024-2025	math	96.1% ±2.6	96%	high	11 Dec 2025	Eval log ↗
SimpleBench	reasoning	45.8%	56%	high	—	External ↗
SWE-Bench verified	coding	73.8% ±2.0	88%	high	12 Feb 2026	Eval log ↗
GPQA diamond	science	88.2% ±1.9	92%	high	11 Dec 2025	Eval log ↗
ARC-AGI	reasoning	78.7%	80%	high	—	External ↗

Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.

API list price over time

Price history

$ per 1M tokens

10 observations (OpenRouter listing + Internet Archive snapshots). History accumulates with every ingest run; a single point means no change has been observed yet.