UltraGPT
Perplexity: Sonar Deep Research
Sonar Deep Research is a research-focused model designed for multi-step retrieval, synthesis, and reasoning across complex topics. It autonomously searches, reads, and evaluates sources, refining its approach as it gathers...
Intelligence overview
128K tok
Context window
115.2K tok
Max output
What Perplexity: Sonar Deep Research can do.
Reasoning
Extended reasoning
Works through problems step by step before answering, trading latency for accuracy on harder tasks.
Development
Streaming
Streams tokens as they're generated instead of waiting on the full response.
Pay for what you use.
Every model in UltraGPT runs behind one flat subscription — this is the underlying per-token cost the catalog tracks.
$2 / 1M tok
$8 / 1M tok
Built for serious work.
Think
Works through multi-step problems with extended reasoning before it answers.
Research
Holds up to 128K tokens of source material in context without losing the thread.
Ask Perplexity: Sonar Deep Research anything.
A preview of the real UltraGPT composer — the model you see here is the model you get.
Continues in the UltraGPT app — one login, every model.
How Perplexity: Sonar Deep Research stacks up.
The closest models in the catalog by provider, capability and score — real entries, pulled from the same directory.
Technical details.
Specification
- Context window
- 128K tokens
- Max output
- 115.2K tokens
- Input modalities
- Text
- Output modalities
- Text
- Knowledge cutoff
- Jan 1, 2025
- Release date
- Feb 1, 2025
- Streaming
- Supported
- Tool calling
- Not supported
- JSON mode
- Not supported
More from Perplexity, and everything else.
This model is one entry in the full UltraGPT catalog — browse the rest, compare pricing and context windows, or filter by capability.