GPT-4o vs GPT-5.6 Sol.
model vs model · prices as of
GPT-5.6 Sol takes 3 of 5 rounds against GPT-4o. It is also the cheaper of the two to run, at $16 per million tokens against $16.63.
OpenAIGPT-4o
$16.63/M tokens
cheapest we can explain, at Jiekou · $2.00 per 1,000 pages
128k context · tool calling · reads images
OpenAIwins 3 roundsGPT-5.6 Sol
$16/M tokens
cheapest we can explain, at Nous Portal · $1.80 per 1,000 pages
1.1M context · tool calling · reads images
List price in (lower wins)
$5/M
$4/M
List price out (lower wins)
$15/M
$20/M
Cheapest we can explain (lower wins)
$16.63/M at Jiekou
$16/M at Nous Portal
Standard price (lower wins)
$30/M
$32/M
Cost per 1,000 pages (lower wins)
$2.00
$1.80
Context
128k tokens
1.1M tokens
Open weights
no
no
Tool calling
yes
yes
Structured output
yes
yes
Reads images
yes
yes
Reasoning
no
yes
Released
13 May 2024
9 Jul 2026
Providers selling it
29
44
Price we measure against
the maker's own
the maker's own
Trains on your prompts (no is better)
not stated
not stated
Providers selling both · 5
Nous Portal$17.50 / $16
Jiekou$16.63 / $32- OpenAI$30 / $32
OrcaRouter$30 / $32
Merge Gateway$30 / $45
GPT-4o then GPT-5.6 Sol, 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
- GPT-4oNous Portal$2 / $8 $2.50 / $1025% dearer ·
- GPT-5.6 SolNous Portal$1.60 / $8 $2 / $1025% dearer ·
- GPT-5.6 Sol
Requesty$5 / $30 $4 / $2029% cheaper ·
Frequently asked
- Which is cheaper, GPT-4o or GPT-5.6 Sol?
- GPT-5.6 Sol, at $16 per million tokens against $16.63 for GPT-4o, three parts input to one part output, read on 17 Sept 2026.
- Where is each one cheapest?
- GPT-4o: $16.63 at Jiekou. GPT-5.6 Sol: $16 at Nous Portal.
- Can I buy both from one provider?
- Yes. 5 providers sell both: Nous Portal, Jiekou, OpenAI, OrcaRouter, Merge Gateway. The cheapest of them for the two together is Nous Portal.
- Which holds more context?
- GPT-5.6 Sol, at 1.1M tokens against 128k.
Prices exclude tax and are per million tokens, read 17 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.