DeepSeek V4.1 Flash 1017 vs GPT-6.1 Terra

aka DeepSeek 1017 vs OpenAI GPT-6.1 Terra

31 posts368 likes69.9K views

  • Author picksGPT-6.1 Terra4–3
  • CheaperDeepSeek V4.1 Flash 10179/14 postsmedian gap ~1.8×
  • FasterGPT-6.1 Terra16/17 postsmedian gap ~5.8×

As stated in each post, not a controlled benchmark.

Posts

31

Same prompt, separate runs

8

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

About this matchup

DeepSeek V4.1 Flash 1017 vs GPT-6.1 Terra in real side-by-side tests: 31 posts from X where both got the same prompt; 22 posts report cost or time. Judge coding ability from the actual outputs.

DeepSeek V4.1 Flash 1017 vs GPT-6.1 Terra: which is better for coding?

Which is better for coding, DeepSeek V4.1 Flash 1017 or GPT-6.1 Terra?

Author picks: where the author preferred one of the two, they picked GPT-6.1 Terra 4 times and DeepSeek V4.1 Flash 1017 3 times. That covers 7 of the 31 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-6.1 Terra?

14 posts state a cost for both: DeepSeek V4.1 Flash 1017 was cheaper in 9; GPT-6.1 Terra in 5 (median gap ~1.8×). These are the costs the posts state for each run, not list prices.

Which is faster, DeepSeek V4.1 Flash 1017 or GPT-6.1 Terra?

17 posts state a time for both: GPT-6.1 Terra was faster in 16; DeepSeek V4.1 Flash 1017 in 1 (median gap ~5.8×). Times are as stated in each post; tools and settings differ between posts.

Summary

DeepSeek V4.1 Flash 1017 and GPT-6.1 Terra appear together in 31 posts on X: voxel bike, DeepSeek V4.1 Flash 1017 vs GPT-6.1 Terra (@filicroval), satellite Mesh Blackout benchmark, four models in OpenCode (@AlicanKiraz0), cheetah sprint, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017 (@LatentOperatorX), fake Genie 4 walkable world in one HTML file (@maker_evan), rainy city at night, DeepSeek vs GPT-6.1 Terra (@LatentOperatorX) and 26 more. 16 of them are part of larger lineups with other models. The 5 most-viewed examples: In @YxzRainy's 3D pelican bike ride by the sea, three models, GPT-6.1 Terra was faster (7.5 min vs 1 h 16 min) and used fewer tokens (5.3M tokens vs 69.1M tokens), as reported in the post. In @Vortlyn's Interstellar black hole in three.js, DeepSeek vs Terra, DeepSeek V4.1 Flash 1017 was cheaper ($0.17 vs $0.18) and GPT-6.1 Terra was faster (2.5 min vs 34 min), as reported in the post. In @AlicanKiraz0's satellite Mesh Blackout benchmark, four models in OpenCode, GPT-6.1 Terra was cheaper ($0.42 vs $0.47) and faster (10.9 min vs 18.7 min), as reported in the post. In @LatentOperatorX's raccoon animation, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017, DeepSeek V4.1 Flash 1017 was cheaper ($0.06 vs $1.13) and GPT-6.1 Terra was faster (11.7 min vs 15.3 min), as reported in the post. In @LatentOperatorX's dragon attacking a medieval castle, Terra vs DeepSeek, DeepSeek V4.1 Flash 1017 was cheaper ($0.05 vs $0.61) and GPT-6.1 Terra was faster (7.4 min vs 8.4 min), as reported in the post. The table below lists all 18 posts with numbers for both.

What each post reports

DeepSeek V4.1 Flash 1017 vs GPT-6.1 Terra: cost, time and tokens as stated in each post
PostModelTimeCostTokensFeedback roundsAuthor’s verdictPost
Voxel bike, DeepSeek V4.1 Flash 1017 vs GPT-6.1 Terra@filicrovalDeepSeek V4.1 Flash 1017—————X post
Voxel bike, DeepSeek V4.1 Flash 1017 vs GPT-6.1 Terra@filicrovalGPT-6.1 Terra—————X post
Satellite Mesh Blackout benchmark, four models in OpenCode@AlicanKiraz0DeepSeek V4.1 Flash 101718.7 min$0.47———X post
Satellite Mesh Blackout benchmark, four models in OpenCode@AlicanKiraz0GPT-6.1 Terra10.9 min$0.42———X post
Cheetah sprint, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@LatentOperatorXGPT-6.1 Terra7.2 min$0.76———X post
Cheetah sprint, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@LatentOperatorXDeepSeek V4.1 Flash 10179.5 min$0.06———X post
Fake Genie 4 walkable world in one HTML file@maker_evanGPT-6.1 Terra—————X post
Fake Genie 4 walkable world in one HTML file@maker_evanDeepSeek V4.1 Flash 1017—————X post
Rainy city at night, DeepSeek vs GPT-6.1 Terra@LatentOperatorXDeepSeek V4.1 Flash 10178.9 min$0.05———X post
Rainy city at night, DeepSeek vs GPT-6.1 Terra@LatentOperatorXGPT-6.1 Terra9.7 min$0.66———X post
Black hole render, DeepSeek 1017 vs Terra xHigh@filicrovalDeepSeek V4.1 Flash 1017————Author’s pickX post
Black hole render, DeepSeek 1017 vs Terra xHigh@filicrovalGPT-6.1 Terra———2—X post
Tank ambush scene, four affordable models@RafaCrackYTGPT-6.1 Terra2 h 44 min$1.20——The poster says GPT-6.1 Terra came out pretty solid.X post
Tank ambush scene, four affordable models@RafaCrackYTDeepSeek V4.1 Flash 10174 h 41 min————X post
Cinematic cruise ship at sea, three models@jpshrodingerDeepSeek V4.1 Flash 1017—$0.27———X post
Cinematic cruise ship at sea, three models@jpshrodingerGPT-6.1 Terra—$0.04———X post
Bionic nautilus sim, four models one prompt@maker_evanGPT-6.1 Terra—————X post
Bionic nautilus sim, four models one prompt@maker_evanDeepSeek V4.1 Flash 1017—————X post
Photoreal human eye in the browser, four models@maker_evanGPT-6.1 Terra—————X post
Photoreal human eye in the browser, four models@maker_evanDeepSeek V4.1 Flash 1017—————X post
Pixel-art shiba in snowy Tokyo, four models@maker_evanGPT-6.1 Terra79 s————X post
Pixel-art shiba in snowy Tokyo, four models@maker_evanDeepSeek V4.1 Flash 101732 min$0.29———X post
Complete 3D house render, three models@sshayahmetGPT-6.1 Terra10.6 min$0.614,810,000——X post
Complete 3D house render, three models@sshayahmetDeepSeek V4.1 Flash 10173 h 54 min$3.00125,790,000——X post
Raccoon animation, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@LatentOperatorXGPT-6.1 Terra11.7 min$1.13———X post
Raccoon animation, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@LatentOperatorXDeepSeek V4.1 Flash 101715.3 min$0.06———X post
FawnBench running deer, four budget models@fawnunwrapDeepSeek V4.1 Flash 10174.7 min$0.068124,000——X post
FawnBench running deer, four budget models@fawnunwrapGPT-6.1 Terra35 s$0.03221,000——X post
DeepSeek V4.1 Flash Max vs GPT-6.1 Terra Ultra@SPAC89DeepSeek V4.1 Flash 1017—————X post
DeepSeek V4.1 Flash Max vs GPT-6.1 Terra Ultra@SPAC89GPT-6.1 Terra—————X post
3D car from scratch in Three.js and WebGL@aiZttt__GPT-6.1 Terra—————X post
3D car from scratch in Three.js and WebGL@aiZttt__DeepSeek V4.1 Flash 1017—————X post
3D block-tower destruction, three models@LatentOperatorXGPT-6.1 Terra62 s$0.05———X post
3D block-tower destruction, three models@LatentOperatorXDeepSeek V4.1 Flash 10179.9 min$0.04———X post
Pixel Hello Kitty walk cycle, four models@ann_nnngGPT-6.1 Terra————Author’s pickX post
Pixel Hello Kitty walk cycle, four models@ann_nnngDeepSeek V4.1 Flash 1017—————X post
3D pelican bike ride by the sea, three models@YxzRainyGPT-6.1 Terra7.5 min—5,323,000——X post
3D pelican bike ride by the sea, three models@YxzRainyDeepSeek V4.1 Flash 10171 h 16 min—69,124,000——X post
Island house, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@ying_shaoAIRGPT-6.1 Terra12 min————X post
Island house, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@ying_shaoAIRDeepSeek V4.1 Flash 10171 h 10 min———Author’s pickX post
Steam engine, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@ying_shaoAIRGPT-6.1 Terra8.3 min$1.30———X post
Steam engine, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@ying_shaoAIRDeepSeek V4.1 Flash 101747 min$0.54———X post
Cartoon bicycle ride, three models@_ninetyheGPT-6.1 Terra————Author’s pickX post
Cartoon bicycle ride, three models@_ninetyheDeepSeek V4.1 Flash 1017—————X post
Stormlit ocean lighthouse, two models scored@icoretech_incDeepSeek V4.1 Flash 101718.6 min$0.0027———X post
Stormlit ocean lighthouse, two models scored@icoretech_incGPT-6.1 Terra2.3 min$0.14———X post
Mario level, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@benchmark_lb900GPT-6.1 Terra————Author’s pickX post
Mario level, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@benchmark_lb900DeepSeek V4.1 Flash 1017—————X post
Pelican club night ride SVG, two models@mspd4100GPT-6.1 Terra—————X post
Pelican club night ride SVG, two models@mspd4100DeepSeek V4.1 Flash 1017——20,000,000——X post
Blender axe, five models side by side@sshayahmetGPT-6.1 Terra18.5 min$0.614,880,000——X post
Blender axe, five models side by side@sshayahmetDeepSeek V4.1 Flash 1017—————X post
Pelican SVG with GPT-6.1 Terra at two effort levels@xiangxiang103GPT-6.1 Terra—————X post
Pelican SVG with GPT-6.1 Terra at two effort levels@xiangxiang103DeepSeek V4.1 Flash 10175.5 min———Author’s pickX post
Blender axe, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@sshayahmetGPT-6.1 Terra18 min$0.614,880,000—Author’s pickX post
Blender axe, GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017@sshayahmetDeepSeek V4.1 Flash 10171 h 51 min$1.00———X post
Golden Ballon d’Or trophy, three models@LatentOperatorXGPT-6.1 Terra5.6 min$0.61———X post
Golden Ballon d’Or trophy, three models@LatentOperatorXDeepSeek V4.1 Flash 101717.7 min$0.04———X post
Interstellar black hole in three.js, DeepSeek vs Terra@VortlynDeepSeek V4.1 Flash 101734 min$0.17———X post
Interstellar black hole in three.js, DeepSeek vs Terra@VortlynGPT-6.1 Terra2.5 min$0.18———X post
Dragon attacking a medieval castle, Terra vs DeepSeek@LatentOperatorXGPT-6.1 Terra7.4 min$0.61———X post
Dragon attacking a medieval castle, Terra vs DeepSeek@LatentOperatorXDeepSeek V4.1 Flash 10178.4 min$0.05———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-6.1 TerraOpenAI2026-10-26Announcement

From the vendors’ official pages, checked 2026-10-26. 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

8

Prompts shown in the posts

Generate an animated SVG of a pelican riding a bicycle — @xiangxiang103

Models

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