DeepSeek V4.1 Flash 1017 vs GPT-6 Luna

aka DeepSeek 1017 vs Luna

5 posts31 likes962 views

  • Author picksDeepSeek V4.1 Flash 10171–0
  • CheaperGPT-6 Luna2/2 postsmedian gap ~3.1×
  • FasterGPT-6 Luna3/3 postsmedian gap ~3.9×

As stated in each post, not a controlled benchmark.

Posts

5

Same prompt, separate runs

4

Not a controlled comparison: prompts, tools and time differ.

About this matchup

DeepSeek V4.1 Flash 1017 vs GPT-6 Luna in real side-by-side tests: 5 posts from X where both got the same prompt; 3 posts report cost or time. Judge coding ability from the actual outputs.

DeepSeek V4.1 Flash 1017 vs GPT-6 Luna: which is better for coding?

Which is better for coding, DeepSeek V4.1 Flash 1017 or GPT-6 Luna?

Author picks: where the author preferred one of the two, they picked DeepSeek V4.1 Flash 1017 once and GPT-6 Luna never. That covers 1 of the 5 posts here; each post is a different task, so watch the outputs above for the work you care about.

Which is cheaper, DeepSeek V4.1 Flash 1017 or GPT-6 Luna?

2 posts state a cost for both: GPT-6 Luna was cheaper in both (median gap ~3.1×). These are the costs the posts state for each run, not list prices.

Which is faster, DeepSeek V4.1 Flash 1017 or GPT-6 Luna?

3 posts state a time for both: GPT-6 Luna was faster in all 3 (median gap ~3.9×). Times are as stated in each post; tools and settings differ between posts.

Summary

DeepSeek V4.1 Flash 1017 and GPT-6 Luna appear together in 5 posts on X: moonwalking dancer under a spotlight (@LatentOperatorX), decorated neon store, one shot (@crossstardesign), GPU showcase website from given image assets, four models (@VulKan42069), pelican driving a flying roadster (@noclipepe) and mona Lisa on a pelican on a PS5 controller (@jan_volad). 4 of them are part of larger lineups with other models. In @noclipepe's pelican driving a flying roadster, GPT-6 Luna was cheaper ($0.14 vs $0.51) and faster (17.7 min vs 1 h 09 min), as reported in the post. In @VulKan42069's GPU showcase website from given image assets, four models, GPT-6 Luna was faster (3.3 min vs 34 min), as reported in the post. In @LatentOperatorX's moonwalking dancer under a spotlight, GPT-6 Luna was cheaper ($0.02 vs $0.05) and faster (5.7 min vs 7.3 min), as reported in the post.

What each post reports

DeepSeek V4.1 Flash 1017 vs GPT-6 Luna: cost, time and tokens as stated in each post
PostModelTimeCostTokensAuthor’s verdictPost
Moonwalking dancer under a spotlight@LatentOperatorXGPT-6 Luna5.7 min$0.02——X post
Moonwalking dancer under a spotlight@LatentOperatorXDeepSeek V4.1 Flash 10177.3 min$0.05——X post
Decorated neon store, one shot@crossstardesignDeepSeek V4.1 Flash 1017———Author’s pickX post
Decorated neon store, one shot@crossstardesignGPT-6 Luna———The poster says DeepSeek V4.1 Flash 1017 filled the store with shelves, neon and warm lights, while GPT-6 Luna gave a dark empty room with one box copied many times.X post
GPU showcase website from given image assets, four models@VulKan42069DeepSeek V4.1 Flash 101734 min———X post
GPU showcase website from given image assets, four models@VulKan42069GPT-6 Luna3.3 min———X post
Pelican driving a flying roadster@noclipepeDeepSeek V4.1 Flash 10171 h 09 min$0.51——X post
Pelican driving a flying roadster@noclipepeGPT-6 Luna17.7 min$0.14——X post
Mona Lisa on a pelican on a PS5 controller@jan_voladDeepSeek V4.1 Flash 1017————X post
Mona Lisa on a pelican on a PS5 controller@jan_voladGPT-6 Luna————X post

Only numbers stated in each post. “—” means the post doesn’t say.

Quick facts

ModelVendorReleasedInput $/1M tokensOutput $/1M tokensContext (tokens)Official links
DeepSeek V4.1 Flash 1017DeepSeek2026-10-17$0.30peak hours; off-peak is half price$1.20peak hours; off-peak is half price1,000,000Release notes · Pricing
GPT-6 LunaOpenAI

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
  • Decorated neon store, one shotThe poster says DeepSeek V4.1 Flash 1017 filled the store with shelves, neon and warm lights, while GPT-6 Luna gave a dark empty room with one box copied many times.— the author’s view, @crossstardesign (paraphrased)

Models

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