GPT-5.5 Instant

Language Proprietary

Benchmarks

About GPT-5.5 Instant

GPT-5.5 Instant is an AI model developed by OpenAI, in the language category, released in 2026, made available as a proprietary (API-only) model. GPT-5.5 Instant is the new default low-latency model for ChatGPT, replacing GPT-5.3 Instant. OpenAI says it produces abo.

On this page you'll find GPT-5.5 Instant's full specifications, including 1 benchmark result. Review provider pricing and benchmark scores below, or compare GPT-5.5 Instant head-to-head with other language models.

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GPT-5.5 Instant benchmark scores▶

Compare on the benchmark table →

Benchmark	Category	Score	Variant
AIME 2025	math	81.2%

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Frequently asked questions

What is GPT-5.5 Instant? ▶

GPT-5.5 Instant is the new default low-latency model for ChatGPT, replacing GPT-5.3 Instant. OpenAI says it produces abo It is tracked on GenAIList with its specifications, benchmark scores and provider pricing.

Who created GPT-5.5 Instant? ▶

GPT-5.5 Instant was developed by OpenAI and released in 2026.

Is GPT-5.5 Instant open source or proprietary? ▶

GPT-5.5 Instant is a proprietary model. It is accessed through an API rather than by downloading the weights.

How much does GPT-5.5 Instant cost? ▶

Pricing for GPT-5.5 Instant depends on the provider. See the providers table on this page for the latest API rates.

How does GPT-5.5 Instant perform on benchmarks? ▶

GPT-5.5 Instant is benchmarked across 1 evaluation on GenAIList, including AIME 2025 (81.2%). See the full benchmark table below and compare it with other models.