Glimmer Index
Plus $4/mo

GPT-5.2 Pro

OpenAI · Released Dec 11, 2025 · Closed weights

Higher-accuracy GPT-5.2 variant for tougher reasoning and review workflows

Strongest at
Reasoning
Top 23% of the past year's models · 3 of 5 benchmarks
Price per 1M tokens
$21 / $168
input / output · OpenAI
Context window
400K
tokens in · 128K out
Since the last one
66 days
after GPT-5 Pro
Open in the timeline

Capability profile

Where it lands among 91 models released in the past year. 50 is the average model.

This modelGPT-5 ProEvery model from the past year
Coding
No results yet
Writing
No results yet
Reading & documents
No results yet
Reasoning
69Top 23%
Math
61Top 34%
Science
No results yet
Visual reasoning
No results yet
Computer use
No results yet
Where these scores come from

Each capability combines the published benchmarks listed here, rescaled so 50 is the reference average and 15 points is one standard deviation. A hollow marker rests on a single benchmark.

Price against capability

The shaded corner holds anything better and cheaper. Prices blend input and output 3 to 1.

15 models from the past year score higher on Reasoning for less: GPT-6.1 Terra, GPT-6 Astra, GPT-6.1 Sol and 12 more.

$0.1$0.3$1$3$10$3020406080100GPT-6.1 Terra: 99, $2 per 1MDeepSeek V4.1 Flash 1017: 74, $0.26 per 1MClaude Haiku 5.5: 64, $0.2 per 1MMistral Large 4: 53, $2.06 per 1MGemini 4 Argon: 85, $4 per 1MGPT-6.1 Sol: 87, $4 per 1MClaude Sonnet 5.5: 81, $4 per 1MGPT-6 Sol: 76, $4 per 1MGPT-6 Luna: 53, $0.2 per 1MClaude Opus 5.5: 84, $8 per 1MGrok 4.7: 60, $3 per 1MDeepSeek V4.1 Flash: 68, $0.21 per 1MGPT-6 Astra: 90, $20 per 1MMuse Spark 1.3: 60, $2 per 1MGemini 3.8 Flash: 75, $1.5 per 1MClaude Fable 5.1: 77, $20 per 1MGLM-5.3-Flash: 48, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 54, $0.32 per 1MQwen3.8 27B: 49, $1.12 per 1MGLM-5.3: 60, $2.15 per 1MGemini 3.7 Flash: 73, $1.5 per 1MDeepSeek V4 Pro 0813: 66, $0.99 per 1MGrok 4.6: 66, $3 per 1MMuse Spark 1.2: 64, $2 per 1MQwen3.8 Max: 66, $3 per 1MDeepSeek V4 Flash 0731: 61, $0.15 per 1MClaude Opus 5: 76, $10 per 1MGemini 3.6 Flash: 61, $1.5 per 1MGemini 3.5 Flash Lite: 35, $0.85 per 1MKimi K3: 62, $6 per 1MQwen3.7 Flash: 42, $0.055 per 1MGPT-5.6 Terra: 66, $4.5 per 1MGPT-5.6 Sol: 76, $8 per 1MGPT-5.6 Luna: 57, $0.45 per 1MGrok 4.5: 63, $3 per 1MClaude Sonnet 5: 64, $4 per 1MGLM-5.2: 49, $2.15 per 1MKimi K2.7 Code: 51, $1.71 per 1MClaude Fable 5: 74, $20 per 1MQwen3.7 Plus: 44, $0.7 per 1MClaude Opus 4.8: 68, $10 per 1MQwen3.7 Max: 58, $3.75 per 1MGemini 3.5 Flash: 64, $3.38 per 1MDeepSeek V4 Pro: 48, $1.19 per 1MDeepSeek V4 Flash: 21, $0.11 per 1MGPT-5.5 Pro: 79, $67.5 per 1MGPT-5.5: 75, $11.2 per 1MQwen3.6 27B: 27, $1.35 per 1MKimi K2.6: 46, $1.71 per 1MGrok 4.3: 22, $1.56 per 1MGrok Build 0.1: 34, $1.25 per 1MClaude Opus 4.7: 63, $10 per 1MQwen3.6 35B-A3B: 49, $0.84 per 1MMuse Spark 1.1: 61, $2 per 1MGLM-5.1: 54, $2.15 per 1MQwen3.6 Plus: 33, $1.12 per 1MGPT-5.4 nano: 48, $0.46 per 1MGPT-5.4 mini: 40, $1.69 per 1MGPT-5.4 Pro: 77, $67.5 per 1MGPT-5.4: 68, $5.62 per 1MQwen3.5 Flash: 47, $0.18 per 1MQwen3.5 122B-A10B: 44, $1.1 per 1MGemini 3.1 Pro Preview: 68, $4.5 per 1MClaude Sonnet 4.6: 54, $6 per 1MQwen3.5 Plus: 43, $0.9 per 1MQwen3.5 397B-A17B: 45, $1.35 per 1MGLM-5: 47, $1.55 per 1MClaude Opus 4.6: 55, $10 per 1MKimi K2.5: 46, $1 per 1MGLM-4.7: 51, $1 per 1MGemini 3 Flash Preview: 58, $1.12 per 1MGPT-5.2 Codex: 37, $4.81 per 1MGPT-5.2: 59, $4.81 per 1MClaude Opus 4.5: 61, $10 per 1MGPT-5.1: 54, $3.44 per 1MGPT-5 Pro: 61, $41.2 per 1MGPT-5.2 Pro: 69, $57.8 per 1MGPT-5.2 ProPrice per 1M tokens →↑ Reasoning$0.1$1$1020406080100GPT-6.1 Terra: 99, $2 per 1MDeepSeek V4.1 Flash 1017: 74, $0.26 per 1MClaude Haiku 5.5: 64, $0.2 per 1MMistral Large 4: 53, $2.06 per 1MGemini 4 Argon: 85, $4 per 1MGPT-6.1 Sol: 87, $4 per 1MClaude Sonnet 5.5: 81, $4 per 1MGPT-6 Sol: 76, $4 per 1MGPT-6 Luna: 53, $0.2 per 1MClaude Opus 5.5: 84, $8 per 1MGrok 4.7: 60, $3 per 1MDeepSeek V4.1 Flash: 68, $0.21 per 1MGPT-6 Astra: 90, $20 per 1MMuse Spark 1.3: 60, $2 per 1MGemini 3.8 Flash: 75, $1.5 per 1MClaude Fable 5.1: 77, $20 per 1MGLM-5.3-Flash: 48, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 54, $0.32 per 1MQwen3.8 27B: 49, $1.12 per 1MGLM-5.3: 60, $2.15 per 1MGemini 3.7 Flash: 73, $1.5 per 1MDeepSeek V4 Pro 0813: 66, $0.99 per 1MGrok 4.6: 66, $3 per 1MMuse Spark 1.2: 64, $2 per 1MQwen3.8 Max: 66, $3 per 1MDeepSeek V4 Flash 0731: 61, $0.15 per 1MClaude Opus 5: 76, $10 per 1MGemini 3.6 Flash: 61, $1.5 per 1MGemini 3.5 Flash Lite: 35, $0.85 per 1MKimi K3: 62, $6 per 1MQwen3.7 Flash: 42, $0.055 per 1MGPT-5.6 Terra: 66, $4.5 per 1MGPT-5.6 Sol: 76, $8 per 1MGPT-5.6 Luna: 57, $0.45 per 1MGrok 4.5: 63, $3 per 1MClaude Sonnet 5: 64, $4 per 1MGLM-5.2: 49, $2.15 per 1MKimi K2.7 Code: 51, $1.71 per 1MClaude Fable 5: 74, $20 per 1MQwen3.7 Plus: 44, $0.7 per 1MClaude Opus 4.8: 68, $10 per 1MQwen3.7 Max: 58, $3.75 per 1MGemini 3.5 Flash: 64, $3.38 per 1MDeepSeek V4 Pro: 48, $1.19 per 1MDeepSeek V4 Flash: 21, $0.11 per 1MGPT-5.5 Pro: 79, $67.5 per 1MGPT-5.5: 75, $11.2 per 1MQwen3.6 27B: 27, $1.35 per 1MKimi K2.6: 46, $1.71 per 1MGrok 4.3: 22, $1.56 per 1MGrok Build 0.1: 34, $1.25 per 1MClaude Opus 4.7: 63, $10 per 1MQwen3.6 35B-A3B: 49, $0.84 per 1MMuse Spark 1.1: 61, $2 per 1MGLM-5.1: 54, $2.15 per 1MQwen3.6 Plus: 33, $1.12 per 1MGPT-5.4 nano: 48, $0.46 per 1MGPT-5.4 mini: 40, $1.69 per 1MGPT-5.4 Pro: 77, $67.5 per 1MGPT-5.4: 68, $5.62 per 1MQwen3.5 Flash: 47, $0.18 per 1MQwen3.5 122B-A10B: 44, $1.1 per 1MGemini 3.1 Pro Preview: 68, $4.5 per 1MClaude Sonnet 4.6: 54, $6 per 1MQwen3.5 Plus: 43, $0.9 per 1MQwen3.5 397B-A17B: 45, $1.35 per 1MGLM-5: 47, $1.55 per 1MClaude Opus 4.6: 55, $10 per 1MKimi K2.5: 46, $1 per 1MGLM-4.7: 51, $1 per 1MGemini 3 Flash Preview: 58, $1.12 per 1MGPT-5.2 Codex: 37, $4.81 per 1MGPT-5.2: 59, $4.81 per 1MClaude Opus 4.5: 61, $10 per 1MGPT-5.1: 54, $3.44 per 1MGPT-5 Pro: 61, $41.2 per 1MGPT-5.2 Pro: 69, $57.8 per 1MGPT-5.2 ProPrice per 1M tokens →↑ Reasoning

OpenAI $21 / $168 · OpenRouter $21 / $168

Since GPT-5 Pro

4 releases in the GPT-5.5 Pro line.

GPT-5 ProOct 6, 202566dGPT-5.2 ProDec 11, 202584dGPT-5.4 ProMar 5, 202649dGPT-5.5 ProApr 23, 2026
Released66 days later
Price in / out$21 / $168+40%
Context400Ksame
Reasoning69+7.8
Math61+12.7

A newer release is out: GPT-5.5 Pro.

ECI STANDING#30 of 270
SCORE156.33153.89–159.98 CI
FRONTIER LAGLaunched in the leadNothing released before it had scored higher.
SCORES LIKE THESE MODELSGrok 4.6xAI · Aug 2026156.57GPT-5.6 LunaOpenAI · Jul 2026156.5GLM-5.3Z.ai (Zhipu AI) · Aug 2026155.99DeepSeek V4.1 FlashDeepSeek · Sep 2026155.93
Full Epoch Capabilities Index ranking ↗

Epoch benchmark boards

Best result on each board it has run. The tick marks the leader.

Chess Puzzles
60%#9 of 93
ARC-AGI
90%#27 of 107
FrontierMath-Tiers-1-3-v2-Private
74%#24 of 90
ARC-AGI-2
54%#36 of 103
SimpleBench
57%#33 of 89
FrontierMath-Tier-4-v2-Private
46%#27 of 72

OpenAI's past year

24 release days in the past year, about one every 15 days. The next is expected around Nov 8, 2026. Forecasts ↗

NovDecJanFebMarAprMayJunJulAugSepOctNov

Specifications

RELEASE DATEDec 11, 2025
WEIGHTSClosed weights
CONTEXT WINDOW400K
MAX OUTPUT128K
REASONINGNot listed
TOOL CALLINGNot listed
INPUTStext, image/jpeg, image/png, image/gif, image/webp
OUTPUTStext

Models.dev record ↗

Specifications and prices from Models.dev; availability and limits may differ by provider. Benchmarks from Epoch AI (CC BY 4.0), LiveBench and the other sources named above.