Claude Fable 5.1 vs DeepSeek V4.1 Flash 1017
Claude Fable 5.1 vs DeepSeek V4.1 Flash 1017 in real side-by-side tests: 2 posts from X where both got the same prompt; 1 post reports cost or time. Judge coding ability from the actual outputs.
Claude Fable 5.1 is faster than DeepSeek V4.1 Flash 1017 in 1 of 1 post that reports times for both.
- Cheaper · 1/1DeepSeek V4.1 Flash 1017~15×
- Faster · 1/1Claude Fable 5.1~4.6×
From 2 posts; costs and times as stated by each author, not a controlled benchmark.
Posts
2
Same prompt, separate runs
2Not a controlled comparison: prompts, tools and time differ.
Summary
Claude Fable 5.1 and DeepSeek V4.1 Flash 1017 appear together in 2 posts on X: Three.js night scene in three labs’ agents (@agentsky_dev) and PS5 controller and pelican stack SVG, six runs (@dashiAIxz). All are part of larger lineups with other models. 1 post states a cost for both: DeepSeek V4.1 Flash 1017 was cheaper in it (~15× cheaper). 1 post states a time for both: Claude Fable 5.1 was faster in it (~4.6× faster). In @agentsky_dev's Three.js night scene in three labs’ agents, DeepSeek V4.1 Flash 1017 was cheaper ($0.14 vs $2.05) and Claude Fable 5.1 was faster (4.9 min vs 22.7 min), as reported in the post.
What each post reports
| Post | Model | Time | Cost | Tokens | Original |
|---|---|---|---|---|---|
| Three.js night scene in three labs’ agents@agentsky_dev | Claude Fable 5.1 | 4.9 min | $2.05 | — | X post |
| Three.js night scene in three labs’ agents@agentsky_dev | DeepSeek V4.1 Flash 1017 | 22.7 min | $0.14 | — | X post |
| PS5 controller and pelican stack SVG, six runs@dashiAIxz | Claude Fable 5.1 | — | — | — | X post |
| PS5 controller and pelican stack SVG, six runs@dashiAIxz | DeepSeek V4.1 Flash 1017 | — | — | — | 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 |
|---|---|---|---|---|---|---|
| Claude Fable 5.1 | Anthropic | |||||
| 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 |
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.
Fable 5.1 vs DeepSeek V4.1 Flash 1017: which is better for coding?
Which is better for coding, Fable 5.1 or DeepSeek V4.1 Flash 1017?
None of the 2 posts here names one of the two as the better result, so judge the outputs above for the work you care about.
Which is cheaper, Fable 5.1 or DeepSeek V4.1 Flash 1017?
1 post states a cost for both: DeepSeek V4.1 Flash 1017 was cheaper in it (~15× cheaper). These are the costs the posts state for each run, not list prices.
Which is faster, Fable 5.1 or DeepSeek V4.1 Flash 1017?
1 post states a time for both: Claude Fable 5.1 was faster in it (~4.6× faster). Times are as stated in each post; tools and settings differ between posts.
Prompts shown in the posts
Draw an animated SVG: a PS5 controller riding a bicycle, the bicycle riding a pelican, the pelican riding a bicycle, and under it an even bigger pelican walking on the road, 16:9. (Translated from Chinese.) — @dashiAIxz
Models
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