Perplexity or GPT-5.5?
Choose Perplexity when source-cited web research, multi-model search and deep research is the closer match. Choose GPT-5.5 when existing gpt-5.5 production workflows and migration baselines matters more. Test both on the same real tasks before moving a production workflow.
Source-cited web research, multi-model search and deep research
Existing GPT-5.5 production workflows and migration baselines
Perplexity
Source-cited web research, multi-model search and deep research
Official specification ↗GPT-5.5
Earlier flagship model for coding and complex professional work.
Official specification ↗Side-by-side comparison
| Category | Perplexity | GPT-5.5 |
|---|---|---|
| Provider | Perplexity AI | OpenAI |
| Type | Product · AI Search | Model · Reasoning model |
| Pricing summary | Free; Pro and Max; Max $200/mo or $2,000/year | $5 input, $0.50 cached input and $30 output per 1M tokens |
| Input price | Product or plan pricing | $5 / 1M tokens |
| Cached input | Not directly comparable | $0.50 / 1M tokens |
| Output price | Product or plan pricing | $30 / 1M tokens |
| Context window | Varies by included model and plan | 1.05M tokens |
| Maximum output | Varies by included model and surface | 128K tokens |
| Knowledge cutoff | Model-dependent; web access may add current information | December 1, 2025 |
| Reasoning | Varies by selected model or mode | none, low, medium, high, xhigh |
| Relative speed | Varies by model, plan and workload | Moderate |
| Input modalities | See documented product features | Text and image |
| Output modalities | See documented product features | Text |
| Tools and integrations | Web-grounded answers with citations; Multiple frontier models on paid plans; Advanced Deep Research and editable reports; Create, Computer and Comet agent workflows | Functions, web search, file search, computer use and supported Responses API tools |
| API / access | Product surface; see official source for API availability | v1/responses, v1/chat/completions and v1/batch |
| Best fit | Source-cited web research, multi-model search and deep research | Existing GPT-5.5 production workflows and migration baselines |
| Company | Perplexity AI | OpenAI |
| Product category | Product · AI Search | Model · Reasoning model |
| Current pricing note | Free; Pro and Max; Max $200/mo or $2,000/year | $5 input, $0.50 cached input and $30 output per 1M tokens |
| Best suited to | Source-cited web research, multi-model search and deep research | Existing GPT-5.5 production workflows and migration baselines |
| Key capabilities | Web-grounded answers with citations; Multiple frontier models on paid plans; Advanced Deep Research and editable reports; Create, Computer and Comet agent workflows | 1.05M context; 128K maximum output; Vision input; Responses API tools |
| Last verified | 2026-08-24 | 2026-09-08 |
| Official product source | https://www.perplexity.ai/help-center/en/articles/11680686-perplexity-max | https://developers.openai.com/api/docs/models/gpt-5.5 |
How we reached this verdict
We looked at the things that affect everyday use: what each product can do, how its plans are structured, where it fits into your existing workflow, and what the provider currently documents. Benchmark results are useful context, but they are not a universal winner score because test settings and tools vary.
Common questions
Perplexity or GPT-5.5: which should I choose?
Choose Perplexity for source-cited web research, multi-model search and deep research. Choose GPT-5.5 for existing gpt-5.5 production workflows and migration baselines. Validate the decision with your own prompts and total task cost.
Is Perplexity cheaper than GPT-5.5?
Pricing units can differ. Perplexity: Free; Pro and Max; Max $200/mo or $2,000/year. GPT-5.5: $5 input, $0.50 cached input and $30 output per 1M tokens. Check tool charges, plan limits, caching and long-context rules before comparing totals.
Which is better for coding and agent work?
Capability depends on the selected product surface, tools and harness. Perplexity is positioned for source-cited web research, multi-model search and deep research; GPT-5.5 is positioned for existing gpt-5.5 production workflows and migration baselines. Run the same repository task on both.
How do their context windows compare?
Perplexity lists Varies by included model and plan; GPT-5.5 lists 1.05M tokens. A larger limit does not by itself guarantee better retrieval or lower cost.
Official sources
Use these provider pages to confirm current features, pricing and availability.
AI tools change quickly. We checked this page on 2026-09-08. Before you subscribe, confirm the latest price, regional availability and usage limits on the provider website.