GPT-5.5 Instant
Parameters
-
Context Length
1M
Modality
Multimodal
Architecture
Dense
License
Proprietary
Release Date
5 May 2026
Knowledge Cutoff
-
Evaluation Benchmarks
Rank
#28
| Benchmark | Score | Rank |
|---|---|---|
General Text | 1473 | ⭐ 19 |
Rankings
Overall Rank
#28
Coding Rank
-
About GPT-5.5 Instant
OpenAI's fast daily driver model released May 5, 2026. Features a 1,000,000 token context window, advanced memory source citation mechanics, and tight concise text generations with a massive 52.5% reduction in hallucination profiles. Handled natively in the API via the "chat-latest" alias.
Technical Specifications
Detailed architecture specifications are limited for proprietary models.
Resources
About GPT-5.5 Instant
GPT-5.5 Instant is OpenAI's high-speed, cost-efficient default model tier launched globally for ChatGPT and developers. Engineered to dramatically reduce latency and cut hallucinations by over 50% in high-stakes fields like medicine and law, it uses roughly 30% fewer words per response than its predecessor line while supporting integrated memory sources and advanced tool calling.
Other GPT-5.5 Instant Models
- No related models available