Claude Sonnet 4.5 vs Sonar Pro Search.
model vs model · prices as of
Claude Sonnet 4.5 takes 2 of 5 rounds against Sonar Pro Search. It is also the cheaper of the two to run, at $20.61 per million tokens against $24.
Anthropicwins 2 roundsClaude Sonnet 4.5
$20.61/M tokens
cheapest we can explain, at Poe · $2.32 per 1,000 pages
1M context · tool calling · reads images
PerplexitySonar Pro Search
$24/M tokens
Perplexity list price, nothing below it is accounted for · $2.70 per 1,000 pages
200k context · reads images
List price in (lower wins)
$3/M
$3/M
List price out (lower wins)
$15/M
$15/M
Cheapest we can explain (lower wins)
$20.61/M at Poe
none below list
Standard price (lower wins)
$24/M
$24/M
Cost per 1,000 pages (lower wins)
$2.32
$2.70
Context
1M tokens
200k tokens
Open weights
no
not stated
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
39
3
Price we measure against
the maker's own
the maker's own
Trains on your prompts (no is better)
not stated
no provider to check
Providers selling both · 2
Kilo Gateway$24 / $24
OpenRouter$24 / $24
Claude Sonnet 4.5 then Sonar Pro Search, per million tokens
Go further
Add a third or fourth model, or switch the weighting, in the tool.
What moved in the last seven days
- Claude Sonnet 4.5
Nous Portal$2.40 / $12 $3 / $1525% dearer · - Claude Sonnet 4.5
Requesty$3.30 / $16.50 $3 / $159% cheaper ·
Frequently asked
- Which is cheaper, Claude Sonnet 4.5 or Sonar Pro Search?
- Claude Sonnet 4.5, at $20.61 per million tokens against $24 for Sonar Pro Search, three parts input to one part output, read on 16 Sept 2026.
- Where is each one cheapest?
- Claude Sonnet 4.5: $20.61 at Poe. Sonar Pro Search: nobody goes below the maker's own price with a reason we can point at, so $24 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?
- Claude Sonnet 4.5, at 1M tokens against 200k.
Prices exclude tax and are per million tokens, read 16 Sept 2026 from each provider's own catalog. The standard price blends three parts input to one part output; a page is 600 tokens in and 60 out. Bars are scaled to the larger value in each row.