GPT-5.4 Image 2 vs GPT-Realtime-2.1
Prices checked
GPT-5.4 Image 2 and GPT-Realtime-2.1 split the 5 rounds this table counts: the maker's two prices, the cheapest price, the maker's blended price and context. The weighting you pick decides the rest.
OpenAIGPT-5.4 Image 2
272k context · reads images
$9.75/M tokensOpenAI's own price · $5.70 per 1,000 pages
OpenAIGPT-Realtime-2.1
128k context · tool calling · reads images
$9/M tokensOpenAI's own price · $3.84 per 1,000 pages
Maker's price in (lower wins)
$8/M
$4/M
Maker's price out (lower wins)
$15/M
$24/M
Cheapest price (lower wins)
none below the maker
none below the maker
Maker's price, blended (lower wins)
$9.75/M
$9/M
Cost per 1,000 pages (lower wins)
$5.70
$3.84
Context
272k tokens
128k tokens
Open weights
not published
no
Tool calling
no
yes
Structured output
yes
no
Reads images
yes
yes
Reasoning
yes
yes
Released
21 Apr 2026
6 Jul 2026
Providers selling it
4
4
Price we measure against
the maker's own
the maker's own
Trains on your prompts (no is better)
no provider to check
no provider to check
Providers selling both · 1
- OpenAI$9.75 / $9
GPT-5.4 Image 2, then GPT-Realtime-2.1, per million tokens.
Go further
Add a third or fourth model, or change the weighting, in the tool.
Frequently asked
- Which is cheaper, GPT-5.4 Image 2 or GPT-Realtime-2.1?
- GPT-Realtime-2.1, at $9 per million tokens against $9.75 for GPT-5.4 Image 2, blended 3 in : 1 out, read on 31 Oct 2026.
- Where is each one cheapest?
- GPT-5.4 Image 2: nobody sells it below the maker's own price with a stated reason, so $9.75 is the number to beat. GPT-Realtime-2.1: nobody sells it below the maker's own price with a stated reason, so $9 is the number to beat.
- Can I buy both from one provider?
- Yes. One provider sells both: OpenAI. The cheapest of them for the two together is OpenAI.
- Which holds more context?
- GPT-5.4 Image 2, at 272k 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.
Related comparisons