GPT-5.6 Sol vs GPT-Realtime-2.1.
model vs model · prices as of
GPT-5.6 Sol takes 4 of 5 rounds against GPT-Realtime-2.1. It is also the cheaper of the two to run, at $16 per million tokens against $36.
OpenAIwins 4 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
OpenAIGPT-Realtime-2.1
$36/M tokens
OpenAI list price, nothing below it is accounted for · $3.84 per 1,000 pages
128k context · tool calling · reads images
List price in (lower wins)
$4/M
$4/M
List price out (lower wins)
$20/M
$24/M
Cheapest we can explain (lower wins)
$16/M at Nous Portal
none below list
Standard price (lower wins)
$32/M
$36/M
Cost per 1,000 pages (lower wins)
$1.80
$3.84
Context
1.1M tokens
128k tokens
Open weights
no
no
Tool calling
yes
yes
Structured output
yes
no
Reads images
yes
yes
Reasoning
yes
yes
Released
9 Jul 2026
6 Jul 2026
Providers selling it
44
4
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 · 4
FastRouter$32 / $36- OpenAI$32 / $36
Vercel AI Gateway$32 / $36
LLM Gateway$45 / $36
GPT-5.6 Sol then GPT-Realtime-2.1, 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-5.6 Sol
Nous Portal$1.60 / $8 $2 / $1025% dearer · - GPT-5.6 Sol
Requesty$5 / $30 $4 / $2029% cheaper ·
Frequently asked
- Which is cheaper, GPT-5.6 Sol or GPT-Realtime-2.1?
- GPT-5.6 Sol, at $16 per million tokens against $36 for GPT-Realtime-2.1, three parts input to one part output, read on 17 Sept 2026.
- Where is each one cheapest?
- GPT-5.6 Sol: $16 at Nous Portal. GPT-Realtime-2.1: nobody goes below the maker's own price with a reason we can point at, so $36 is the number to beat.
- Can I buy both from one provider?
- Yes. 4 providers sell both: FastRouter, OpenAI, Vercel AI Gateway, LLM Gateway. The cheapest of them for the two together is FastRouter.
- 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.