# GPT-5.3 Instant Benchmark Scores & Performance

> BenchLM is tracking GPT-5.3 Instant by OpenAI. Sourced benchmark coverage is coming soon.

Canonical page: https://benchlm.ai/models/gpt-5-3-instant

Last updated: September 8, 2026

## Model Details

| Property | Value |
|----------|-------|
| Creator | OpenAI |
| Source Type | Proprietary |
| Reasoning Type | Reasoning |
| Context Window | 400K |
| Overall Score | Coming soon |
| Overall Rank | Unranked |

## Family & Coverage

- Family: GPT-5.3
- Variant: instant
- Benchmarks covered: 0 of 427
- Coverage note: Benchmark data is coming soon for this model.

## Other OpenAI Models

- [GPT-6 Astra](/models/gpt-6-astra) - Score: 84.11
- [GPT-5.6 Sol](/models/gpt-5-6-sol) - Score: 80.54
- [GPT-5.5](/models/gpt-5-5) - Score: 72.01
- [GPT-5.6 Terra](/models/gpt-5-6-terra) - Score: 71.19
- [GPT-5.4](/models/gpt-5-4) - Score: 70.82
- [GPT-5.2 Pro](/models/gpt-5-2-pro) - Score: 68.83
- [GPT-5.2](/models/gpt-5-2) - Score: 64.87
- [GPT-5.6 Luna](/models/gpt-5-6-luna) - Score: 64.71
- [GPT-5.3 Codex](/models/gpt-5-3-codex) - Score: 64.24
- [GPT-5.1](/models/gpt-5-1) - Score: 63.05
- [GPT-5.5 Pro](/models/gpt-5-5-pro) - Score: 61.85
- [GPT-5.4 mini](/models/gpt-5-4-mini) - Score: 61.12
- [GPT-5.4 Pro](/models/gpt-5-4-pro) - Score: 60.53
- [GPT-5.4 nano](/models/gpt-5-4-nano) - Score: 59.58
- [GPT-5.2 Instant](/models/gpt-5-2-instant) - Score: 57.18
- [GPT-5 (high)](/models/gpt-5-high) - Score: 56.81
- [GPT-5.3-Codex-Spark](/models/gpt-5-3-codex-spark) - Score: 55.12
- [GPT-5.2-Codex](/models/gpt-5-2-codex) - Score: 54.13
- [GPT-5.1-Codex-Max](/models/gpt-5-1-codex-max) - Score: 52.74
- [GPT-5 (medium)](/models/gpt-5-medium) - Score: 49.8
- [GPT-5.1-Codex](/models/gpt-5-1-codex) - Score: 48.4
- [o4-mini (high)](/models/o4-mini-high) - Score: 48.35
- [o3](/models/o3) - Score: 47.57
- [o3-pro](/models/o3-pro) - Score: 47.34
- [o3-mini](/models/o3-mini) - Score: 46.86
- [o1](/models/o1) - Score: 46.18
- [o1-preview](/models/o1-preview) - Score: 46.08
- [GPT-OSS 120B](/models/gpt-oss-120b) - Score: 45.73
- [GPT-5 mini](/models/gpt-5-mini) - Score: 45.09
- [o1-pro](/models/o1-pro) - Score: 42.28
- [GPT-4.1](/models/gpt-4-1) - Score: 42.04
- [GPT-OSS 20B](/models/gpt-oss-20b) - Score: 40.78
- [GPT-4o](/models/gpt-4o) - Score: 38.96
- [GPT-5 nano](/models/gpt-5-nano) - Score: 37
- [GPT-4.1 mini](/models/gpt-4-1-mini) - Score: 33.89
- [GPT-4o mini](/models/gpt-4o-mini) - Score: 33.79
- [GPT-4.1 nano](/models/gpt-4-1-nano) - Score: 27.34
- [GPT-4 Turbo](/models/gpt-4-turbo) - Score: 24.85
- [GPT-5.6 Cyber](/models/gpt-5-6-cyber) - Score: not computed
- [GPT Realtime 1.5](/models/gpt-realtime-1-5) - Score: not computed
- [GPT-4o mini TTS](/models/gpt-4o-mini-tts) - Score: not computed
- [GPT Realtime](/models/gpt-realtime) - Score: not computed
- [GPT Realtime 2](/models/gpt-realtime-2) - Score: not computed
- [GPT Realtime mini](/models/gpt-realtime-mini) - Score: not computed
- [GPT-4o Audio](/models/gpt-4o-audio) - Score: not computed
- [GPT-4o mini Audio](/models/gpt-4o-mini-audio) - Score: not computed