Glimmer Index
Plus $4/mo

GPT-5.4 nano

OpenAI · Released Mar 17, 2026 · Closed weights
Latest GPT-5.4 nano

Cheapest GPT-5.4 lane for simple routing, extraction, and bulk automation

Strongest at
Writing
Better than 29% of the past year's models · 2 of 4 benchmarks
Price per 1M tokens
$0.2 / $1.25
input / output · OpenAI
Context window
400K
tokens in · 128K out
Since the last one
222 days
after GPT-5 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-5 NanoMedian of the past year
5090Median of the past yearCoding: 36 · Better than 11%Writing: 49 · Better than 29%Reading & documents: 36 · Better than 20%Reasoning: 48 · Better than 24%Math: 48 · Better than 19%Science: 56 · Better than 19%GPT-5 Nano: 43GPT-5 Nano: 41GPT-5 Nano: 49CodingWritingReadingReasoningMathScience
Coding36Better than 11% · 1 test
Writing49Better than 29%
Reading & documents36Better than 20%
Reasoning48+5.1Better than 24%
Math48+6.8Better than 19%
Science56+6.8Better than 19%

No results yet: 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.

8 models from the past year score higher on Writing for less: DeepSeek V4 Flash Vision Exp, DeepSeek V4.1 Flash, Gemma 4 31B IT and 5 more.

$0.1$0.3$1$3$10204060Kimi K3.1 Pro: 70, $4 per 1MClaude Haiku 5.5: 46, $0.2 per 1MMistral Large 4: 41, $2.06 per 1MGemini 4 Argon: 63, $4 per 1MGPT-6.1 Sol: 64, $4 per 1MClaude Sonnet 5.5: 55, $4 per 1MGPT-6 Sol: 61, $4 per 1MGPT-6 Luna: 22, $0.2 per 1MClaude Opus 5.5: 65, $8 per 1MGrok 4.7: 64, $3 per 1MDeepSeek V4.1 Flash: 56, $0.21 per 1MGPT-6 Astra: 69, $20 per 1MMuse Spark 1.3: 65, $2 per 1MGemini 3.8 Flash: 65, $1.5 per 1MClaude Fable 5.1: 69, $20 per 1MGLM-5.3-Flash: 15, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 56, $0.32 per 1MQwen3.8 27B: 52, $1.12 per 1MGLM-5.3: 65, $2.15 per 1MGemini 3.7 Flash: 61, $1.5 per 1MDeepSeek V4 Pro 0813: 49, $0.99 per 1MQwen3.8 2.4T A95B: 62, $3 per 1MGrok 4.6: 44, $3 per 1MMuse Glimmer 30B: 59, $0.52 per 1MMuse Spark 1.2: 62, $2 per 1MQwen3.8 Max: 57, $3 per 1MDeepSeek V4 Flash 0731: 52, $0.15 per 1MClaude Opus 5: 64, $10 per 1MGemini 3.6 Flash: 63, $1.5 per 1MGemini 3.5 Flash Lite: 53, $0.85 per 1MKimi K3: 64, $6 per 1MGPT-5.6 Terra: 57, $4.5 per 1MGPT-5.6 Sol: 65, $8 per 1MGPT-5.6 Luna: 53, $0.45 per 1MGrok 4.5: 44, $3 per 1MClaude Sonnet 5: 57, $4 per 1MGLM-5.2: 55, $2.15 per 1MKimi K2.7 Code: 23, $1.71 per 1MClaude Fable 5: 68, $20 per 1MClaude Opus 4.8: 62, $10 per 1MQwen3.7 Max: 48, $3.75 per 1MGemini 3.5 Flash: 56, $3.38 per 1MDeepSeek V4 Pro: 54, $1.19 per 1MDeepSeek V4 Flash: 52, $0.11 per 1MGPT-5.5: 64, $11.2 per 1MQwen3.6 27B: 16, $1.35 per 1MKimi K2.6: 56, $1.71 per 1MQwen3.6 Max Preview: 44, $2.92 per 1MGrok 4.3: 29, $1.56 per 1MGrok Build 0.1: 43, $1.25 per 1MClaude Opus 4.7: 61, $10 per 1MMuse Spark 1.1: 58, $2 per 1MGLM-5.1: 56, $2.15 per 1MGemma 4 31B IT: 54, $0.25 per 1MGemma 4 26B A4B IT: 51, $0.14 per 1MQwen3.6 Plus: 31, $1.12 per 1MGPT-5.4 mini: 52, $1.69 per 1MGPT-5.4: 63, $5.62 per 1MGemini 3.1 Flash Lite Preview: 43, $0.56 per 1MQwen3.5 35B-A3B: 39, $0.69 per 1MQwen3.5 27B: 52, $0.82 per 1MQwen3.5 122B-A10B: 47, $1.1 per 1MGemini 3.1 Pro Preview: 57, $4.5 per 1MClaude Sonnet 4.6: 57, $6 per 1MQwen3.5 397B-A17B: 59, $1.35 per 1MGLM-5: 60, $1.55 per 1MClaude Opus 4.6: 56, $10 per 1MKimi K2.5: 62, $1 per 1MGLM-4.7: 58, $1 per 1MGemini 3 Flash Preview: 49, $1.12 per 1MGPT-5.2 Codex: 46, $4.81 per 1MGPT-5.2: 59, $4.81 per 1MMistral Large 3: 38, $0.75 per 1MMinistral 3 14B: 28, $0.2 per 1MDeepSeek V3.2: 49, $0.32 per 1MKimi K2 Thinking: 61, $1.07 per 1MGPT-5.4 nano: 49, $0.46 per 1MGPT-5.4 nanoPrice per 1M tokens →↑ Writing$0.1$1$10204060Kimi K3.1 Pro: 70, $4 per 1MClaude Haiku 5.5: 46, $0.2 per 1MMistral Large 4: 41, $2.06 per 1MGemini 4 Argon: 63, $4 per 1MGPT-6.1 Sol: 64, $4 per 1MClaude Sonnet 5.5: 55, $4 per 1MGPT-6 Sol: 61, $4 per 1MGPT-6 Luna: 22, $0.2 per 1MClaude Opus 5.5: 65, $8 per 1MGrok 4.7: 64, $3 per 1MDeepSeek V4.1 Flash: 56, $0.21 per 1MGPT-6 Astra: 69, $20 per 1MMuse Spark 1.3: 65, $2 per 1MGemini 3.8 Flash: 65, $1.5 per 1MClaude Fable 5.1: 69, $20 per 1MGLM-5.3-Flash: 15, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 56, $0.32 per 1MQwen3.8 27B: 52, $1.12 per 1MGLM-5.3: 65, $2.15 per 1MGemini 3.7 Flash: 61, $1.5 per 1MDeepSeek V4 Pro 0813: 49, $0.99 per 1MQwen3.8 2.4T A95B: 62, $3 per 1MGrok 4.6: 44, $3 per 1MMuse Glimmer 30B: 59, $0.52 per 1MMuse Spark 1.2: 62, $2 per 1MQwen3.8 Max: 57, $3 per 1MDeepSeek V4 Flash 0731: 52, $0.15 per 1MClaude Opus 5: 64, $10 per 1MGemini 3.6 Flash: 63, $1.5 per 1MGemini 3.5 Flash Lite: 53, $0.85 per 1MKimi K3: 64, $6 per 1MGPT-5.6 Terra: 57, $4.5 per 1MGPT-5.6 Sol: 65, $8 per 1MGPT-5.6 Luna: 53, $0.45 per 1MGrok 4.5: 44, $3 per 1MClaude Sonnet 5: 57, $4 per 1MGLM-5.2: 55, $2.15 per 1MKimi K2.7 Code: 23, $1.71 per 1MClaude Fable 5: 68, $20 per 1MClaude Opus 4.8: 62, $10 per 1MQwen3.7 Max: 48, $3.75 per 1MGemini 3.5 Flash: 56, $3.38 per 1MDeepSeek V4 Pro: 54, $1.19 per 1MDeepSeek V4 Flash: 52, $0.11 per 1MGPT-5.5: 64, $11.2 per 1MQwen3.6 27B: 16, $1.35 per 1MKimi K2.6: 56, $1.71 per 1MQwen3.6 Max Preview: 44, $2.92 per 1MGrok 4.3: 29, $1.56 per 1MGrok Build 0.1: 43, $1.25 per 1MClaude Opus 4.7: 61, $10 per 1MMuse Spark 1.1: 58, $2 per 1MGLM-5.1: 56, $2.15 per 1MGemma 4 31B IT: 54, $0.25 per 1MGemma 4 26B A4B IT: 51, $0.14 per 1MQwen3.6 Plus: 31, $1.12 per 1MGPT-5.4 mini: 52, $1.69 per 1MGPT-5.4: 63, $5.62 per 1MGemini 3.1 Flash Lite Preview: 43, $0.56 per 1MQwen3.5 35B-A3B: 39, $0.69 per 1MQwen3.5 27B: 52, $0.82 per 1MQwen3.5 122B-A10B: 47, $1.1 per 1MGemini 3.1 Pro Preview: 57, $4.5 per 1MClaude Sonnet 4.6: 57, $6 per 1MQwen3.5 397B-A17B: 59, $1.35 per 1MGLM-5: 60, $1.55 per 1MClaude Opus 4.6: 56, $10 per 1MKimi K2.5: 62, $1 per 1MGLM-4.7: 58, $1 per 1MGemini 3 Flash Preview: 49, $1.12 per 1MGPT-5.2 Codex: 46, $4.81 per 1MGPT-5.2: 59, $4.81 per 1MMistral Large 3: 38, $0.75 per 1MMinistral 3 14B: 28, $0.2 per 1MDeepSeek V3.2: 49, $0.32 per 1MKimi K2 Thinking: 61, $1.07 per 1MGPT-5.4 nano: 49, $0.46 per 1MGPT-5.4 nanoPrice per 1M tokens →↑ Writing

OpenAI $0.2 / $1.25 · OpenRouter $0.2 / $1.25 · Cached input $0.02

Since GPT-5 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
Released222 days later
Price in / out$0.2 / $1.25+236%
Context400Ksame
Reasoning48+5.1
Math48+6.8
Science56+6.8
ECI STANDING#83 of 270
SCORE146.03143.63–148.15 CI
FRONTIER LAGLaunched 11.0 months behindScores about what o3 did in April 2025.
SCORES LIKE THESE MODELS
Qwen 3.5 Plus (hosted 397B-A17B)Alibaba · Feb 2026146.17
DeepSeek-V4-FlashDeepSeek · Apr 2026146.11DeepSeek-V3.2DeepSeek · Dec 2025146.09
Nemotron 3 UltraNvidia · Jun 2026145.97
Full Epoch Capabilities Index ranking ↗

Epoch benchmark boards

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

Chess Puzzles
45%#29 of 93
OTIS Mock AIME 2024-2025
88%#70 of 216
WeirdML
49%#54 of 141
GPQA diamond
78%#100 of 234
DTBench
80%#83 of 179
ARC-AGI
52%#63 of 107
ARC-AGI-2
6%#65 of 103
FrontierMath-Tiers-1-3-v2-Private
45%#58 of 90
4 more boards
FrontierMath-Tier-4-v2-Private
12%#60 of 72
ProofBench
5%#73 of 81
Mystery Game Puzzles
6%#83 of 88
SimpleQA Verified
12%#81 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 DATEMar 17, 2026
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.