DeepSeek Reasoner (R1) vs Perplexity Sonar Reasoning Pro

Performance benchmarks + pricing comparison — updated April 2026

DeepSeek Reasoner (R1)

DeepSeek

DeepSeek's reasoning model. Comparable to OpenAI's o1 but at much lower cost.

Input$0.550/M
Output$2.19/M
Context128K tokens
Best ForComplex reasoning, math, advanced coding
Benchmark72/100

Perplexity Sonar Reasoning Pro

Perplexity

Perplexity's most advanced search model with deep reasoning. Complex research tasks with cited sources.

Input$5.00/M
Output$20.00/M
Context128K tokens
Best ForDeep research, academic analysis, complex investigations

Cost Comparison by Scenario

Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.

ScenarioDeepSeek Reasoner (R1)Perplexity Sonar Reasoning ProSavings
Small Script (1K lines) $0.08 $0.78 DeepSeek Reasoner (R1) saves $0.69 (89%)
Medium Feature (10K lines) $0.63 $5.75 DeepSeek Reasoner (R1) saves $5.12 (89%)
Large Project (50K lines) $3.15 $28.75 DeepSeek Reasoner (R1) saves $25.60 (89%)
Code Review (5K lines) $0.15 $1.38 DeepSeek Reasoner (R1) saves $1.22 (89%)

Verdict

DeepSeek Reasoner (R1) wins on both price and performance — $0.550/M input with a benchmark score of N/A/100.

For most developers, this is the clear choice between these two models.

Compare with Other Models