OpenAI: GPT-5.5
Analysis Summary
GPT-5.5 is OpenAI's flagship variant in this batch, with an intelligence index of 56.3 and a coding index of 74.9. It also has a strong agentic index, a 1.05 million token context window, tool use, function calling, and text, image, and file input. That combination supports both demanding reasoning and practical workflow integration.
For Design for Online, it is suitable for autonomous coding assistance, long-document analysis, multimodal content review, SEO research, structured content generation, and client-facing tasks where errors are costly. The capability profile supports consolidating several specialist steps into one workflow. Input pricing is premium and output pricing is substantially higher, so it should not be the default for low-value bulk traffic.
Lead with GPT-5.5 for high-stakes work requiring depth, context, and tools. Pair it with a cheaper model for routine volume.
Assessed August 9, 2026
Editorial notes
GPT-5.5 combines frontier reasoning and coding with a 1.05M-token context, tool use, function calling, and vision, making it a lead choice for complex client workflows 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 combines frontier reasoning and coding with a 1.05M-token context, tool use, function calling, and vision, making it a lead choice for complex client workflows despite premium output pricing.
How OpenAI: GPT-5.5 compares
OpenAI: GPT-5.5 ranks #12 of 424 AI models we track for overall intelligence, #9 of 197 for coding, #26 of 179 for agentic tasks. Its 1.1M-token context window is larger than 98% of the models we list. 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 business fit. 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 OpenAI: GPT-5.5 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 OpenAI: GPT-5.5 for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout OpenAI: GPT-5.5
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token..
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Frequently asked questions about OpenAI: GPT-5.5
How much does OpenAI: GPT-5.5 cost?
OpenAI: GPT-5.5 costs $5.00 per million input tokens and $30.00 per million output tokens.
What is the context window of OpenAI: GPT-5.5?
OpenAI: GPT-5.5 has a context window of 1,050,000 tokens (1.1M).
Is OpenAI: GPT-5.5 good for coding?
On our coding benchmark index, OpenAI: GPT-5.5 ranks #9 of 197 models, placing it in the top quartile of the field for code generation and debugging.
What can OpenAI: GPT-5.5 do?
OpenAI: GPT-5.5 supports image/vision input, tool use, and function calling.
Who created OpenAI: GPT-5.5?
OpenAI: GPT-5.5 is developed by OpenAI and was released on April 24, 2026.
