GPT-5 Mini vs Seed 1.6.
model vs model · prices as of
GPT-5 Mini takes 2 of 5 rounds against Seed 1.6. It is also the cheaper of the two to run, at $2.50 per million tokens against $2.75.
OpenAIwins 2 roundsGPT-5 Mini
$2.50/M tokens
cheapest we can explain, at Poe · $0.245 per 1,000 pages
400k context · tool calling · reads images
ByteDanceSeed 1.6
$2.75/M tokens
OpenRouter list price, nothing below it is accounted for · $0.27 per 1,000 pages
262k context · tool calling · reads images
List price in (lower wins)
$0.25/M
$0.25/M
List price out (lower wins)
$2/M
$2/M
Cheapest we can explain (lower wins)
$2.50/M at Poe
none below list
Standard price (lower wins)
$2.75/M
$2.75/M
Cost per 1,000 pages (lower wins)
$0.245
$0.27
Context
400k tokens
262k tokens
Open weights
no
not stated
Tool calling
yes
yes
Structured output
yes
yes
Reads images
yes
yes
Reasoning
yes
yes
Released
7 Aug 2025
23 Dec 2025
Providers selling it
36
7
Price we measure against
the maker's own
OpenRouter
Trains on your prompts (no is better)
not stated
no provider to check
Providers selling both · 6
Kilo Gateway$2.75 / $2.75
LLM Gateway$2.75 / $2.75
Nous Portal$2.75 / $2.75
OpenRouter$2.75 / $2.75
Vercel AI Gateway$2.75 / $2.75
Eden AI$3.03 / $2.75
GPT-5 Mini then Seed 1.6, 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 MiniNous Portal$0.20 / $1.60 $0.25 / $225% dearer ·
- GPT-5 Mini
Requesty$0.25 / $2 $0.28 / $2.2010% dearer · - Seed 1.6Nous Portal$0.20 / $1.60 $0.25 / $225% dearer ·
Frequently asked
- Which is cheaper, GPT-5 Mini or Seed 1.6?
- GPT-5 Mini, at $2.50 per million tokens against $2.75 for Seed 1.6, three parts input to one part output, read on 16 Sept 2026.
- Where is each one cheapest?
- GPT-5 Mini: $2.50 at Poe. Seed 1.6: nobody goes below OpenRouter's own price with a reason we can point at, so $2.75 is the number to beat.
- Can I buy both from one provider?
- Yes. 6 providers sell both: Kilo Gateway, LLM Gateway, Nous Portal, OpenRouter, Vercel AI Gateway, Eden AI. The cheapest of them for the two together is Kilo Gateway.
- Which holds more context?
- GPT-5 Mini, at 400k tokens against 262k.
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.