GPT-5.5 Instant (May 2026)
Context
n/a
Max output
n/a
Serving providers
0
Cheapest input
n/a /1M
Benchmarks
independent evaluations · source: Artificial AnalysisHeadline indices
Individual benchmarks · click a row for effort variants
| Benchmark | Best score | Effort | Cost / task | |
|---|---|---|---|---|
| CritPt | 3% | default | — | |
| GPQA Diamond | 85% | default | — | |
| Humanity's Last Exam | 20% | default | — | |
| IFBench | 72% | default | — | |
| Long-Context Reasoning | 56% | default | — | |
| Omniscience | 10.3 | default | — | |
| SciCode | 50% | default | — | |
| TerminalBench Hard | 42% | default | — | |
| τ²-bench | 49% | default | — |
Pricing by serving provider
availabilityNo public price yet. Not offered on-demand at any tracked provider.
Price history
input + output $/1M since we started tracking Input Output
Price history is accruing. We record a point each day a price changes; the full backfill lands shortly.
Other OpenAI models
compare pricing across the OpenAI lineup Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
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