GPT-5.5 Instant (May 2026)
Analysis Summary
GPT-5.5 Instant is an OpenAI model released May 2026, positioned as a faster or lighter variant within the GPT-5.5 family. Its intelligence index of 33.5 sits in the good tier, but its coding index of 45.1 is stronger, suggesting it is optimised for code-related tasks. The agentic index of 45.9 is relatively low, limiting its suitability for complex multi-step autonomous workflows.
For businesses, this model is best suited to coding assistance, structured content generation, and tasks where OpenAI's ecosystem integration (function calling, structured outputs) is valuable. Its instruction-following score is reasonable and scicode performance is strong for its intelligence tier. It is not the right choice for deep reasoning, long-context analysis, or agentic pipelines where reliability across many steps is required.
At $5 input and $30 output per million tokens, pricing is steep for a model at this intelligence level. Teams already embedded in the OpenAI ecosystem may find it useful for specific coding workflows, but should compare it carefully against cheaper alternatives with similar or better coding scores.
Assessed June 19, 2026
Editorial notes
GPT-5.5 Instant delivers strong coding capability and good instruction following from OpenAI, but its agentic score is limited and pricing is high relative to its intelligence tier.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How GPT-5.5 Instant (May 2026) compares
GPT-5.5 Instant (May 2026) ranks #64 of 382 AI models we track for overall intelligence, #110 of 293 for agentic tasks. At $5.00 per million input tokens it is cheaper than 7% of comparable models.
Benchmark Scores
Intelligence
Technical
Content
Benchmark data from Artificial Analysis and Hugging Face
How does GPT-5.5 Instant (May 2026) stack up?
Compare side-by-side with other specialist models.
Model Information
| Provider | OpenAI |
| Release Date | May 5, 2026 |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $5.00 | $0.005000 |
| Output | $30.00 | $0.030000 |
Leaderboard Categories
Frequently asked questions about GPT-5.5 Instant (May 2026)
How much does GPT-5.5 Instant (May 2026) cost?
GPT-5.5 Instant (May 2026) costs $5.00 per million input tokens and $30.00 per million output tokens.
Who created GPT-5.5 Instant (May 2026)?
GPT-5.5 Instant (May 2026) is developed by OpenAI and was released on May 5, 2026.
