OpenAI · frontier
Is GPT-5.5 Pro good?
GPT-5.5 Pro has been tested across 6 task areas. It's strongest at content & brand and weakest at ai strategy. It's a top-tier (premium) option ($210/1M tokens).
Our take
Strengths
Weak spots
How GPT-5.5 Pro ranks, task by task
Rank is the position in each field; Rating is the absolute quality bar. A model can be rated "Excellent" yet sit mid-table when the whole field is strong — and vice-versa.
| Task area | Rank | Percentile | Rating |
|---|---|---|---|
| Content & Brand | #17 of 50 |
|
Strong |
| Chef / Home Cooking | #27 of 50 |
|
Usable |
| Landing Pages | #33 of 56 |
|
Strong |
| Investor & Pitch | #31 of 50 |
|
Usable |
| Executive Assistant | #35 of 50 |
|
Usable |
| AI Strategy | #45 of 50 |
|
Needs editing |
Industry benchmarks
Standardized third-party scores, shown for context — these are independent of our real-task tests.
Headline vs. real-world
Source: Artificial Analysis (artificialanalysis.ai) via OpenRouter (openrouter.ai/rankings). (2026-06-29) · Source: Design Arena (www.designarena.ai) via OpenRouter (openrouter.ai/rankings). (2026-06-29)
Like GPT-5.5 Pro, but…
Similar
- Gemini 2.5 Pro Premium
- GPT-5 Mini Mid
- GLM 5.1 Mid
Cheaper
- DeepSeek V3.2 100% cheaper
- DeepSeek V3.1 Terminus 99% cheaper
- Gemini 3.1 Flash Lite 99% cheaper
Smarter
- GPT-5.5 +45 pts
- Gemini 3.1 Pro Preview +44 pts
- Claude Opus 4.8 +40 pts
Frequently asked
Is GPT-5.5 Pro any good?
GPT-5.5 Pro places top-3 in 0 of 6 task areas we benchmarked. It performs best at Content & Brand.
What is GPT-5.5 Pro best at?
Its strongest task areas are Content & Brand, Chef / Home Cooking, Landing Pages.
Is there a cheaper alternative to GPT-5.5 Pro?
DeepSeek V3.2 is 100% cheaper and stays competitive on quality across our benchmarks.
How we test & rank
Each model is scored on real tasks across 6 task areas by an LLM judge with deterministic checks. "Percentile" is this model's standing within each area's field; the cross-area figures are rank-based so quality and Elo scores are never mixed.
This page is Spring Prompt, running
We just did this for every model. Do it for your prompt.
The rankings above come from running real tasks through real models and scoring every output. Spring Prompt is that same engine — pointed at your prompt, your test cases, and your definition of good.
- Generate test cases from your prompt — no eval set required to start.
- Compare models side by side with quality, cost and latency in one matrix.
- Optimise the winner until the scores say it's ready to ship.
Prompt × model results
12 test cases · 3 evals