GPT-5.5 (low)
Analysis Summary
GPT-5.5 (low) is a lower-effort configuration in OpenAI's GPT-5.5 family. It records an intelligence index of 44.5 and coding index of 60.9, alongside measured results for instruction following, long-context reasoning, terminal tasks, and tool-use reliability. That profile supports substantial analytical and engineering work, though it is below the higher GPT-5.5 configurations on the supplied intelligence and coding measures.
It can suit coding assistance, document-heavy analysis, and carefully structured content tasks where a capable model is needed. The input does not specify context length, vision, or function-calling availability for this variant, so verify those requirements before selecting it for a workflow that depends on them. Listed prices are $5 per million input tokens and $30 per million output tokens. Use it when the lower-effort configuration meets quality requirements, and reserve more expensive reasoning capacity for the hardest jobs.
Assessed September 23, 2026
Editorial notes
GPT-5.5 (low) retains strong measured coding, reasoning, and long-context performance, making it a capable lower-effort option; listed output pricing remains 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
GPT-5.5 (low) retains strong measured coding, reasoning, and long-context performance, making it a capable lower-effort option; listed output pricing remains premium.
Benchmarks
Artificial Analysis data refreshed Oct 28, 2026. Arena ratings from the Oct 22, 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 (low) compares
GPT-5.5 (low) ranks #22 of 445 AI models we track for overall intelligence, #39 of 199 for coding, #42 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 (low) cost your business?
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A website chatbot handling around 100 customer conversations a day, a few short messages each.
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Frequently asked questions about GPT-5.5 (low)
How much does GPT-5.5 (low) cost?
GPT-5.5 (low) costs $5.00 per million input tokens and $30.00 per million output tokens.
Is GPT-5.5 (low) good for coding?
On our coding benchmark index, GPT-5.5 (low) ranks #39 of 199 models, placing it in the top quartile of the field for code generation and debugging.
Who created GPT-5.5 (low)?
GPT-5.5 (low) is developed by OpenAI and was released on April 23, 2026.