DeepSeek V4.1 Flash 1017 vs LongCat 2.5
aka DeepSeek 1017 vs LongCat 2.5
- Author picksDeepSeek V4.1 Flash 10171–0
As stated in each post, not a controlled benchmark.
Posts
1
Same prompt, separate runs
1Not a controlled comparison: prompts, tools and time differ.
About this matchup
DeepSeek V4.1 Flash 1017 vs LongCat 2.5 in real side-by-side tests: 1 post from X where both got the same prompt. Judge coding ability from the actual outputs.
DeepSeek V4.1 Flash 1017 vs LongCat 2.5: which is better for coding?
Which is better for coding, DeepSeek V4.1 Flash 1017 or LongCat 2.5?
Author picks: where the author preferred one of the two, they picked DeepSeek V4.1 Flash 1017 once and LongCat 2.5 never. That covers 1 of the 1 post here; each post is a different task, so watch the outputs above for the work you care about.
What have DeepSeek V4.1 Flash 1017 and LongCat 2.5 been tested on?
The most-viewed of the 1 post: pelican test, LongCat 2.5 vs DeepSeek 1017 (@dragono64v). Categories: Animations/SVG.
How many side-by-side tests compare DeepSeek V4.1 Flash 1017 and LongCat 2.5?
1 post from X, posted Nov 2, 2026, by @dragono64v. Every one is listed above with its video and a link to its post on X.
Summary
DeepSeek V4.1 Flash 1017 and LongCat 2.5 appear together in 1 post on X: pelican test, LongCat 2.5 vs DeepSeek 1017 (@dragono64v). None of these posts report cost or time per model.
What each post reports
| Post | Model | Time | Cost | Tokens | Author’s verdict | Post |
|---|---|---|---|---|---|---|
| Pelican test, LongCat 2.5 vs DeepSeek 1017@dragono64v | LongCat 2.5 | — | — | — | — | X post |
| Pelican test, LongCat 2.5 vs DeepSeek 1017@dragono64v | DeepSeek V4.1 Flash 1017 | — | — | — | Author’s pick | X post |
Only numbers stated in each post. “—” means the post doesn’t say.
Quick facts
| Model | Vendor | Released | Input $/1M tokens | Output $/1M tokens | Context (tokens) | Official links |
|---|---|---|---|---|---|---|
| DeepSeek V4.1 Flash 1017 | DeepSeek | 2026-10-17 | $0.30peak hours; off-peak is half price | $1.20peak hours; off-peak is half price | 1,000,000 | Release notes · Pricing |
| LongCat 2.5 | Meituan |
From the vendors’ official pages, checked 2026-10-19. Standard API list prices; each value links its source and a blank cell could not be verified. The archive’s own numbers above are what each post states.
Who won where
1- Pelican test, LongCat 2.5 vs DeepSeek 1017The poster says LongCat thinks longer and its front end looks fine, but overall it feels below DeepSeek V4.1 Flash.— the author’s view, @dragono64v (paraphrased)
Models
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