GPT-4.1 vs Sonar Reasoning Pro
Prices checked
GPT-4.1 takes 2 of 5 rounds against Sonar Reasoning Pro. It is also the cheaper of the two to run, at $3.18 per million tokens against $3.50.
OpenAIWins 2 roundsGPT-4.1
1M context · tool calling · reads images
$3.18/M tokensCheapest price, at Poe · $1.53 per 1,000 pages
PerplexitySonar Reasoning Pro
128k context · reads images
$3.50/M tokensPerplexity's own price · $1.68 per 1,000 pages
Maker's price in (lower wins)
$2/M
$2/M
Maker's price out (lower wins)
$8/M
$8/M
Cheapest price (lower wins)
$3.18/M at Poe
none below the maker
Maker's price, blended (lower wins)
$3.50/M
$3.50/M
Cost per 1,000 pages (lower wins)
$1.53
$1.68
Context
1M tokens
128k tokens
Open weights
no
no
Tool calling
yes
no
Structured output
yes
not published
Reads images
yes
yes
Reasoning
no
yes
Released
14 Apr 2025
1 Jan 2024
Providers selling it
33
9
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 · 7
FastRouter$3.50 / $3.50
Helicone$3.50 / $3.50
Kilo Gateway$3.50 / $3.50
LLMTR$3.50 / $3.50
OpenRouter$3.50 / $3.50
Requesty$3.50 / $3.50
Eden AI$3.85 / $3.50
GPT-4.1, then Sonar Reasoning Pro, per million tokens.
Go further
Add a third or fourth model, or change the weighting, in the tool.
What moved this week
AI/ML API · 23% cheaper ·
$2 / $8 $2.60 / $10.40
Frequently asked
- Which is cheaper, GPT-4.1 or Sonar Reasoning Pro?
- GPT-4.1, at $3.18 per million tokens against $3.50 for Sonar Reasoning Pro, blended 3 in : 1 out, read on 31 Oct 2026.
- Where is each one cheapest?
- GPT-4.1: $3.18 at Poe. Sonar Reasoning Pro: nobody sells it below the maker's own price with a stated reason, so $3.50 is the number to beat.
- Can I buy both from one provider?
- Yes. 7 providers sell both: FastRouter, Helicone, Kilo Gateway, LLMTR, OpenRouter, Requesty, and more. The cheapest of them for the two together is FastRouter.
- Which holds more context?
- GPT-4.1, at 1M tokens against 128k.
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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