GPT-5.5 (medium)
Analysis Summary
GPT-5.5 medium is an OpenAI model with an intelligence index of 51.4 and a coding index of 71.5. Its reasoning results are excellent, while instruction following, long-context performance, terminal work, and task success are consistently strong. The supplied data does not list vision, tool use, or function calling for this variant, so those capabilities should not be assumed from the family name.
It fits complex content production, SEO briefs, technical analysis, code review, and supervised automation. Strong instruction following makes it suitable for workflows that require strict formats, editorial constraints, or repeatable transformations. Premium output pricing means routine bulk copy may be better routed to a cheaper model.
Use GPT-5.5 medium as a high-quality generalist for demanding text and coding workloads. Validate tool requirements separately before selecting it for autonomous integrations.
Assessed August 9, 2026
Editorial notes
GPT-5.5 medium delivers excellent reasoning, coding, instruction following, and long-context performance, making it a versatile choice for client content, software work, and structured business automation despite premium output pricing.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
GPT-5.5 medium delivers excellent reasoning, coding, instruction following, and long-context performance, making it a versatile choice for client content, software work, and structured business automation despite premium output pricing.
Benchmark scores
Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
51.4 Intelligence Index·71.5 Coding Index·39.2 Agentic Index
How GPT-5.5 (medium) compares
GPT-5.5 (medium) ranks #30 of 424 AI models we track for overall intelligence, #19 of 197 for coding, #42 of 179 for agentic tasks. At $5.00 per million input tokens it is cheaper than 8% 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.
Strongest on content. The pulled-in value corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →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 (medium) 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 701 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save GPT-5.5 (medium) for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamFrequently asked questions about GPT-5.5 (medium)
How much does GPT-5.5 (medium) cost?
GPT-5.5 (medium) costs $5.00 per million input tokens and $30.00 per million output tokens.
Is GPT-5.5 (medium) good for coding?
On our coding benchmark index, GPT-5.5 (medium) ranks #19 of 197 models, placing it in the top quartile of the field for code generation and debugging.
Who created GPT-5.5 (medium)?
GPT-5.5 (medium) is developed by OpenAI and was released on April 23, 2026.
