Claude Sonnet 4.5 vs Sonar Pro Search
Prices checked
Claude Sonnet 4.5 takes 1 of 5 rounds against Sonar Pro Search. 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 Search
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
not published
Tool calling
yes
no
Structured output
yes
yes
Reads images
yes
yes
Reasoning
yes
yes
Released
29 Sept 2025
30 Oct 2025
Providers selling it
43
3
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 · 2
Kilo Gateway$6 / $6
OpenRouter$6 / $6
Claude Sonnet 4.5, then Sonar Pro Search, per million tokens.
Go further
Add a third or fourth model, or change the weighting, in the tool.
Frequently asked
- Which is cheaper, Claude Sonnet 4.5 or Sonar Pro Search?
- Claude Sonnet 4.5, at $5.15 per million tokens against $6 for Sonar Pro Search, 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 Search: 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. 2 providers sell both: Kilo Gateway, OpenRouter. The cheapest of them for the two together is Kilo Gateway.
- 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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