GPT-5.5 (medium)
Analysis Summary
GPT-5.5 medium is an OpenAI model with an intelligence index of 50.4, a coding index of 71.5, and an agentic index of 74.7, placing it firmly in the world-class tier across all three dimensions. The ifbench score of 0.710 and lcr of 0.723 confirm strong instruction following and long-context reasoning, while terminalbench hard at 0.576 and tau2 at 0.918 indicate reliable agentic task completion.
For businesses, this is a top-tier choice for software engineering, autonomous agents, complex document analysis, and high-stakes client-facing workflows. The combination of frontier reasoning, strong coding, and reliable tool use makes it one of the most versatile models available. At $5 input and $30 output per million tokens, it is priced competitively relative to its capability level.
Teams that need a single model to handle reasoning, coding, and agentic tasks without switching between providers will find GPT-5.5 medium a strong default. It competes directly with Claude Sonnet 4.6 and Gemini 3.1 Pro at a similar or lower price point.
Assessed July 10, 2026
Editorial notes
GPT-5.5 medium from OpenAI delivers world-class reasoning, a coding index of 71.5, and an agentic index of 74.7, making it one of the strongest all-round models available at this price tier.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
GPT-5.5 medium from OpenAI delivers world-class reasoning, a coding index of 71.5, and an agentic index of 74.7, making it one of the strongest all-round models available at this price tier.
Benchmark scores
Magenta = intelligence Ā· Ink = technical/agentic Ā· Cyan = content & long-context Ā· Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
50.4 Intelligence IndexĀ·71.5 Coding IndexĀ·74.7 Agentic Index
How GPT-5.5 (medium) compares
GPT-5.5 (medium) ranks #10 of 393 AI models we track for overall intelligence, #7 of 157 for coding, #5 of 300 for agentic tasks. At $5.00 per million input tokens it is cheaper than 7% of comparable models.
Dark bar = input Ā· light bar = output, scaled to the priciest peer.
1M tokens ā 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on technical. 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 āPricing
| 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 612 models ā 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%.
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Frequently 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 #7 of 157 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.
