Claude Sonnet 4.5 vs Sonar Pro
Prices checked
Claude Sonnet 4.5 takes 1 of 5 rounds against Sonar Pro. It is also the cheaper of the two to run, at $5.15 per million tokens against $6.
AnthropicWins 1 roundClaude Sonnet 4.5
200k context · tool calling · reads images
$5.15/M tokensCheapest price, at Poe · $2.32 per 1,000 pages
PerplexitySonar Pro
200k context · reads images
$6/M tokensPerplexity's own price · $2.70 per 1,000 pages
Maker's price in (lower wins)
$3/M
$3/M
Maker's price out (lower wins)
$15/M
$15/M
Cheapest price (lower wins)
$5.15/M at Poe
none below the maker
Maker's price, blended (lower wins)
$6/M
$6/M
Cost per 1,000 pages (lower wins)
$2.32
$2.70
Context
200k tokens
200k tokens
Open weights
no
no
Tool calling
yes
no
Structured output
yes
not published
Reads images
yes
yes
Reasoning
yes
no
Released
29 Sept 2025
1 Jan 2024
Providers selling it
43
11
Price we measure against
the maker's own
the maker's own
Trains on your prompts (no is better)
not published
no provider to check
Providers selling both · 9
Eden AI$6 / $6
FastRouter$6 / $6
Helicone$6 / $6
Kilo Gateway$6 / $6
LLMTR$6 / $6
OpenRouter$6 / $6
Requesty$6 / $6- AI/ML API$6.35 / $6
Claude Sonnet 4.5, then Sonar Pro, per million tokens; the 8 cheapest of 9.
Go further
Add a third or fourth model, or change the weighting, in the tool.
What moved this week
AI/ML API · 23% cheaper ·
$3 / $15 $3.90 / $19.50
Frequently asked
- Which is cheaper, Claude Sonnet 4.5 or Sonar Pro?
- Claude Sonnet 4.5, at $5.15 per million tokens against $6 for Sonar Pro, blended 3 in : 1 out, read on 31 Oct 2026.
- Where is each one cheapest?
- Claude Sonnet 4.5: $5.15 at Poe. Sonar Pro: nobody sells it below the maker's own price with a stated reason, so $6 is the number to beat.
- Can I buy both from one provider?
- Yes. 9 providers sell both: Eden AI, FastRouter, Helicone, Kilo Gateway, LLMTR, OpenRouter, and more. The cheapest of them for the two together is Eden AI.
- Which holds more context?
- Both hold 200k tokens in one call.
Prices exclude tax, read 31 Oct 2026 from each provider's own catalog. They are per M tokens, blended 3 in : 1 out, and a page is 600 tokens in and 60 out. Bars are scaled to the larger value in each row.
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