GPT-4.1 vs Sonar Reasoning Pro.
model vs model · prices as of
GPT-4.1 takes 2 of 5 rounds against Sonar Reasoning Pro. It is also the cheaper of the two to run, at $12.73 per million tokens against $14.
OpenAIwins 2 roundsGPT-4.1
$12.73/M tokens
cheapest we can explain, at Poe · $1.53 per 1,000 pages
1M context · tool calling · reads images
PerplexitySonar Reasoning Pro
$14/M tokens
Perplexity list price, nothing below it is accounted for · $1.68 per 1,000 pages
128k context · reads images
List price in (lower wins)
$2/M
$2/M
List price out (lower wins)
$8/M
$8/M
Cheapest we can explain (lower wins)
$12.73/M at Poe
none below list
Standard price (lower wins)
$14/M
$14/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 stated
Reads images
yes
yes
Reasoning
no
yes
Released
14 Apr 2025
1 Jan 2024
Providers selling it
30
10
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 · 8
FastRouter$14 / $14
Helicone$14 / $14
Kilo Gateway$14 / $14
LLM Gateway$14 / $14
LLMTR$14 / $14
OpenRouter$14 / $14
Eden AI$15.40 / $14
Requesty$15.40 / $14
GPT-4.1 then Sonar Reasoning Pro, 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
Frequently asked
- Which is cheaper, GPT-4.1 or Sonar Reasoning Pro?
- GPT-4.1, at $12.73 per million tokens against $14 for Sonar Reasoning Pro, three parts input to one part output, read on 16 Sept 2026.
- Where is each one cheapest?
- GPT-4.1: $12.73 at Poe. Sonar Reasoning Pro: nobody goes below the maker's own price with a reason we can point at, so $14 is the number to beat.
- Can I buy both from one provider?
- Yes. 8 providers sell both: FastRouter, Helicone, Kilo Gateway, LLM Gateway, LLMTR, OpenRouter, 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 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.