GPT-5.5 Instant: benchmark results
OpenAI's fast GPT-5.5 Instant tier for low-latency chat. Provider: OpenAI. Released 2026-04-23. Access: API.
Unified ELO 1657 ± 1, rank #116 of 1392 rated models, from 43 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| Chatbot Arena (Text - Spanish) | 1487 | Arena Score | 97.3 |
| Chatbot Arena (Text - Korean) | 1458 | Arena Score | 95.8 |
| FutureEval | 12.66 | Unified Forecasting Score | 95.7 |
| Chatbot Arena (Text - Creative Writing) | 1456 | Arena Score | 93.2 |
| Chatbot Arena (Text - Multi-Turn) | 1483 | Arena Score | 93.2 |
| Chatbot Arena (Text) | 1474 | Elo | 92.6 |
| Chatbot Arena (Vision - Humor) | 1295 | Arena Score | 92 |
| Chatbot Arena (Text - Japanese) | 1460 | Arena Score | 91.9 |
| Chatbot Arena (Text - Russian) | 1478 | Arena Score | 91.5 |
| Chatbot Arena (Text - Coding) | 1514 | Arena Score | 90.5 |
| Chatbot Arena (Text - Hard Prompts) | 1491 | Arena Score | 90.4 |
| Chatbot Arena (Vision - English) | 1280 | Arena Score | 89.8 |
Interactive version: theaggregate.ai/model?slug=gpt-5-5-instant · How It Works · Data refreshed daily, snapshot 2026-09-05.