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Sonar Reasoning Pro vs o3-pro

Side-by-side comparison of API pricing, specs, benchmarks, and capabilities

Sonar Reasoning Pro is 90% cheaper on blended cost ($3.50 vs $35.00/Mtok)
Specification
Overview
StatusCurrent reasoning Current reasoning
Released Mar 1, 2025 Jun 10, 2025
Pricing per million tokens
Input $2.00/Mtok $20.00/Mtok
Output $8.00/Mtok $80.00/Mtok
Blended avg $3.50/Mtok $35.00/Mtok
Specifications
Context window 200K tokens 200K tokens
Parameters Proprietary Proprietary
Speed (TPS)
Modalities
Input
text
textimage
Providers
Available from
Perplexity — $2.00/$8.00/Mtok
OpenAI — $20.00/$80.00/Mtok

Cost at scale

1M tokens · 50/50 input/output
Projected cost of Sonar Reasoning Pro vs o3-pro at increasing token volumes
VolumeSonar Reasoning Proo3-proSavings
1M tokens $3.5 $35 $31.5 (90%)
10M tokens $35 $350 $315 (90%)
100M tokens $350 $3500 $3150 (90%)
1000M tokens $3500 $35000 $31500 (90%)

When to pick which

distilled from the pricing and spec data above
Pick Sonar Reasoning Pro if…
  • cost dominates: $3.50/Mtok blended vs $35.00 — 90% less on the same 50/50 token mix
Pick o3-pro if…
  • this pairing gives o3-pro no edge on price, context, cache discount, or measured performance — pick it only for qualitative fit (ecosystem, compliance, model behavior on your prompts)
Try Sonar Reasoning Pro on Perplexity

The cheaper option here — Sonar Reasoning Pro costs $3.50/Mtok blended on Perplexity.

Get API key →

Summary

Sonar Reasoning Pro by Perplexity costs $2.00/Mtok input and $8.00/Mtok output, with a 200K-token context window. It supports text input.

o3-pro by OpenAI costs $20.00/Mtok input and $80.00/Mtok output, with a 200K-token context window. It supports text, image input.

On a blended cost basis, Sonar Reasoning Pro is 90% cheaper than o3-pro.

Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.

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