Sonar Reasoning
Sonar Reasoning is a legacy integration reference; evaluate Sonar Reasoning Pro before starting new work.
Use it for
- Teams maintaining an existing integration
- Workloads that can use a 127k context window
Do not use it for
- New production launches
- Cost-sensitive launches that need sourced token pricing
- Vision or document-understanding workloads
- Family
- Sonar
- Released
- 2025-01-29
- Context
- 127k
- Architecture
- Decoder Only
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Fine-tuned
Developing AI for complex problem-solving.
No tracked provider token pricing is available yet.
This model is deprecated. Perplexity Labs recommends switching to Sonar Reasoning Pro.
About
Perplexity reasoning model, deprecated and removed from the Perplexity API in December 2025. Successor: sonar-reasoning-pro.
Top use-case fit
Classification
Included by capability and metadata signals in the decision map.
JSON / Tool use
Included by capability and metadata signals in the decision map.
Provider price ladder
No tracked provider token pricing is available for this model yet.
Capabilities
Benchmark peer barsfor Classification
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
Developing AI for complex problem-solving.
No tracked provider token pricing is available yet.