GPT-5.5 (high)
Analysis Summary
GPT-5.5 (high) is a high-effort configuration in OpenAI's GPT-5.5 family. Its intelligence index is 54.7 and coding index is 71.6, with measured results for instruction following, long-context reasoning, terminal work, and tool-use reliability. These results make it a strong candidate for workloads that need careful multi-step execution rather than quick, simple responses.
Businesses can consider it for coding assistance, complex document analysis, and content workflows where precision matters. The supplied record does not specify context length, vision, or direct function-calling support for this configuration, so teams should verify those workflow requirements before adoption. Listed pricing is $5 per million input tokens and $30 per million output tokens. Use it for work where stronger reasoning justifies the expense, and route routine volume to a less costly option.
Assessed September 23, 2026
Editorial notes
The high GPT-5.5 configuration posts strong reasoning, coding, instruction-following, and long-context results, making it a capable choice for complex analysis and engineering tasks; pricing is premium.
The DFO score ranks models on the Artificial Analysis Intelligence Index and is refreshed as new models launch. The write-up and verdict are our own. Feedback?
DFO Verdict
The high GPT-5.5 configuration posts strong reasoning, coding, instruction-following, and long-context results, making it a capable choice for complex analysis and engineering tasks; pricing is premium.
Benchmarks
Artificial Analysis data refreshed Oct 8, 2026. Arena ratings from the Oct 2, 2026 text leaderboard, with style control. Bars: magenta = reasoning, ink = coding and agents, cyan = instructions and long context.
Artificial Analysis no longer lists this model, so its indexes are converted from their older scale to stay comparable.
How GPT-5.5 (high) compares
GPT-5.5 (high) ranks #36 of 435 AI models we track for overall intelligence, #67 of 198 for coding, #39 of 181 for agentic tasks. At $5.00 per million input tokens it is cheaper than 5% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $5.00 | $0.005000 |
| Output | $30.00 | $0.030000 |
What would GPT-5.5 (high) cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 697 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save GPT-5.5 (high) for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamFrequently asked questions about GPT-5.5 (high)
How much does GPT-5.5 (high) cost?
GPT-5.5 (high) costs $5.00 per million input tokens and $30.00 per million output tokens.
Is GPT-5.5 (high) good for coding?
On our coding benchmark index, GPT-5.5 (high) ranks #67 of 198 models, placing it in the broader range of the field for code generation and debugging.
Who created GPT-5.5 (high)?
GPT-5.5 (high) is developed by OpenAI and was released on April 23, 2026.