GPT-5.5 (low)
Analysis Summary
GPT-5.5 low is an OpenAI model with an intelligence index of 43.5, a coding index of 60.9, and an agentic index of 68.1. The ifbench score of 0.644 and lcr of 0.720 indicate strong instruction following and long-context reasoning, while terminalbench hard at 0.523 and tau2 at 0.839 confirm reliable performance in agentic and tool-use settings.
For businesses, this model is a strong fit for coding assistance, autonomous agents, structured data pipelines, and content workflows requiring consistent instruction adherence. At $5 input and $30 output per million tokens, it shares pricing with the medium and non-reasoning variants, making the medium tier the better value for most use cases given its higher intelligence index.
Teams that need a dependable OpenAI model for mixed coding and reasoning workloads will find GPT-5.5 low a capable option. It sits just below the medium tier in reasoning depth but maintains strong agentic reliability, making it a reasonable default for teams not yet requiring the full medium capability.
Assessed July 10, 2026
Editorial notes
GPT-5.5 low from OpenAI delivers excellent reasoning with an intelligence index of 43.5, strong coding at 60.9, and a reliable agentic index of 68.1, with high instruction-following scores.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
GPT-5.5 low from OpenAI delivers excellent reasoning with an intelligence index of 43.5, strong coding at 60.9, and a reliable agentic index of 68.1, with high instruction-following scores.
Benchmark scores
Magenta = intelligence Ā· Ink = technical/agentic Ā· Cyan = content & long-context Ā· Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
43.5 Intelligence IndexĀ·60.9 Coding IndexĀ·68.1 Agentic Index
How GPT-5.5 (low) compares
GPT-5.5 (low) ranks #21 of 393 AI models we track for overall intelligence, #17 of 157 for coding, #21 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 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 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 (low) 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 (low) for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamEmbed this ranking
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 #17 of 157 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.
