Glimmer Index
Plus $4/mo

GPT-5 Nano

OpenAI · Released Aug 7, 2025 · Closed weights

Tiny GPT-5 lane for routing, extraction, classification, and bulk jobs

Strongest at
Reasoning
Better than 15% of the past year's models · 3 of 5 benchmarks
Price per 1M tokens
$0.05 / $0.4
input / output · OpenAI
Context window
400K
tokens in · 128K out
Since the last one
115 days
after GPT-4.1 nano
Open in the timeline

Capability profile

Scored against 91 models released in the past year. 50 is the average model; further out is better.

This modelGPT-4.1 nanoMedian of the past year
5090Median of the past yearGPT-4.1 nanoReasoning: 43 · Better than 15%Math: 41 · Better than 9%Science: 49 · Better than 7%ReasoningMathScience
Reasoning43+6.9Better than 15%
Math41+1.9Better than 9%
Science49+13.3Better than 7%

No results yet: Coding, Writing, Reading & documents, Visual reasoning, Computer use

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 dot rests on a single benchmark.

Price against capability

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

Nothing from the past year scores higher on Reasoning for less.

$0.1$0.3$1$3$10$3020406080100GPT-6.1 Terra: 99, $2 per 1MDeepSeek V4.1 Flash 1017: 74, $0.52 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, $0.18 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 Pro: 69, $57.8 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-4.1 nano: 36, $0.18 per 1MGPT-5 Nano: 43, $0.14 per 1MGPT-5 NanoPrice per 1M tokens →↑ Reasoning$0.1$1$1020406080100GPT-6.1 Terra: 99, $2 per 1MDeepSeek V4.1 Flash 1017: 74, $0.52 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, $0.18 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 Pro: 69, $57.8 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-4.1 nano: 36, $0.18 per 1MGPT-5 Nano: 43, $0.14 per 1MGPT-5 NanoPrice per 1M tokens →↑ Reasoning

OpenAI $0.05 / $0.4 · OpenRouter $0.05 / $0.4 · Cached input $0.005

Since GPT-4.1 nano

3 releases in the GPT-5.4 nano line.

GPT-4.1 nanoApr 14, 2025115dGPT-5 NanoAug 7, 2025222dGPT-5.4 nanoMar 17, 2026
Released115 days later
Price in / out$0.05 / $0.4−21%
Context400Kwas 1.05M
Reasoning43+6.9
Math41+1.9
Science49+13.3

A newer release is out: GPT-5.4 nano.

ECI STANDING#127 of 270
SCORE139.21134.11–141.2 CI
FRONTIER LAGLaunched 7.7 months behindScores about what o1 did in December 2024.
SCORES LIKE THESE MODELS
Qwen3-30B-A3B-Thinking (Jul 2025)Alibaba · Jul 2025139.55
Qwen3.5-9BAlibaba · Feb 2026139.32Qwen3-235B-A22BAlibaba · Apr 2025139.15DeepSeek-R1DeepSeek · Jan 2025138.82
Full Epoch Capabilities Index ranking ↗

Epoch benchmark boards

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

MATH level 5
95%#12 of 98
OTIS Mock AIME 2024-2025
81%#91 of 216
Chess Puzzles
22%#59 of 93
WeirdML
38%#98 of 141
VPCT
37%#21 of 29
ARC-AGI-2
3%#76 of 103
ProofBench
12%#64 of 81
ARC-AGI
21%#88 of 107
6 more boards
Mystery Game Puzzles
9%#74 of 88
FrontierMath-Tiers-1-3-v2-Private
20%#77 of 90
Fiction.LiveBench
44%#50 of 58
Terminal Bench
22%#45 of 50
FrontierMath-Tier-4-v2-Private
2%#67 of 72
SimpleQA Verified
12%#82 of 85

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 DATEAug 7, 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.