GPT-6.1 Sol vs Kimi K3.1 Pro

aka Sol 6.1 vs Moonshot AI Kimi K3.1 Pro

12 posts392 likes37.9K views

  • Author picksGPT-6.1 Sol3–1
  • CheaperGPT-6.1 Sol5/8 postsmedian gap ~1.6×
  • FasterGPT-6.1 Sol5/6 postsmedian gap ~1.8×

As stated in each post, not a controlled benchmark.

Posts

12

Same prompt, separate runs

6

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

About this matchup

GPT-6.1 Sol vs Kimi K3.1 Pro in real side-by-side tests: 12 posts from X where both got the same prompt; 10 posts report cost or time. Judge coding ability from the actual outputs.

GPT-6.1 Sol vs Kimi K3.1 Pro: which is better for coding?

Which is better for coding, GPT-6.1 Sol or Kimi K3.1 Pro?

Author picks: where the author preferred one of the two, they picked GPT-6.1 Sol 3 times and Kimi K3.1 Pro once. That covers 4 of the 12 posts here; each post is a different task, so watch the outputs above for the work you care about.

Which is cheaper, GPT-6.1 Sol or Kimi K3.1 Pro?

8 posts state a cost for both: GPT-6.1 Sol was cheaper in 5; Kimi K3.1 Pro in 3 (median gap ~1.6×). These are the costs the posts state for each run, not list prices.

Which is faster, GPT-6.1 Sol or Kimi K3.1 Pro?

6 posts state a time for both: GPT-6.1 Sol was faster in 5; Kimi K3.1 Pro in 1 (median gap ~1.8×). Times are as stated in each post; tools and settings differ between posts.

Summary

GPT-6.1 Sol and Kimi K3.1 Pro appear together in 12 posts on X: 3D supercar, Terra vs Sonnet vs Sol vs Kimi (@marcthecreatorr), Blender axe, five models side by side (@sshayahmet), Eiffel Tower benchmark, GPT-6.1 Terra debut (@EnvolDev), Temple Run–style endless runner, three endpoints (@novita_labs), Halloween pumpkin patch, three models (@HavisT83099) and 7 more. 7 of them are part of larger lineups with other models. The 5 most-viewed examples: In @vib3coded's voxel ship in a bottle, $0.21 vs $9.81, Kimi K3.1 Pro was cheaper ($0.21 vs $9.81), as reported in the post. In @notjazii's Blender scene recreation from references, GPT-6.1 Sol was cheaper ($0.70 vs $1.50) and faster (17 min vs 25 min), as reported in the post. In @EnvolDev's Eiffel Tower benchmark, GPT-6.1 Terra debut, GPT-6.1 Sol was cheaper ($1.10 vs $3.12), as reported in the post. In @marcthecreatorr's 3D supercar, Terra vs Sonnet vs Sol vs Kimi, GPT-6.1 Sol was faster (25 min vs 1 h 15 min), as reported in the post. In @tamacoin_tamao's glowing 3D Tokyo city, Kimi K3.1 Pro vs GPT-6.1 Sol, GPT-6.1 Sol was cheaper ($0.57 vs $1.12), as reported in the post. The table below lists all 10 posts with numbers for both.

What each post reports

GPT-6.1 Sol vs Kimi K3.1 Pro: cost, time and tokens as stated in each post
PostModelTimeCostTokensAuthor’s verdictPost
3D supercar, Terra vs Sonnet vs Sol vs Kimi@marcthecreatorrGPT-6.1 Sol25 min———X post
3D supercar, Terra vs Sonnet vs Sol vs Kimi@marcthecreatorrKimi K3.1 Pro1 h 15 min———X post
Blender axe, five models side by side@sshayahmetGPT-6.1 Sol27.9 min$0.882,570,000—X post
Blender axe, five models side by side@sshayahmetKimi K3.1 Pro1 h 30 min$3.587,270,000—X post
Eiffel Tower benchmark, GPT-6.1 Terra debut@EnvolDevGPT-6.1 Sol22.5 min$1.10——X post
Eiffel Tower benchmark, GPT-6.1 Terra debut@EnvolDevKimi K3.1 Pro—$3.12——X post
Temple Run–style endless runner, three endpoints@novita_labsKimi K3.1 Pro—$0.0475,179—X post
Temple Run–style endless runner, three endpoints@novita_labsGPT-6.1 Sol—$0.044,232—X post
Halloween pumpkin patch, three models@HavisT83099GPT-6.1 Sol19.2 min$0.61——X post
Halloween pumpkin patch, three models@HavisT83099Kimi K3.1 Pro22 min$0.54——X post
Glowing 3D Tokyo city, Kimi K3.1 Pro vs GPT-6.1 Sol@tamacoin_tamaoKimi K3.1 Pro—$1.12——X post
Glowing 3D Tokyo city, Kimi K3.1 Pro vs GPT-6.1 Sol@tamacoin_tamaoGPT-6.1 Sol—$0.57——X post
Halloween grim reaper 3D model, three models@LatentOperatorXGPT-6.1 Sol9.6 min$0.36—Author’s pickX post
Halloween grim reaper 3D model, three models@LatentOperatorXKimi K3.1 Pro7.7 min$0.20——X post
Pure-code 3D scene, both on max@Laplace_GjnKimi K3.1 Pro————X post
Pure-code 3D scene, both on max@Laplace_GjnGPT-6.1 Sol————X post
Blender scene recreation from references@notjaziiKimi K3.1 Pro25 min$1.50——X post
Blender scene recreation from references@notjaziiGPT-6.1 Sol17 min$0.70—Author’s pickX post
Haunted ship, one try each@olezhavichKimi K3.1 Pro40 min——Kimi K3.1 Pro went for glowing waves, Claude Opus 5.5 for dark atmosphere and GPT-6.1 Sol for a cleaner ship; the poster picks Claude Opus 5.5 for atmosphere.X post
Haunted ship, one try each@olezhavichGPT-6.1 Sol18.8 min——Kimi K3.1 Pro went for glowing waves, Claude Opus 5.5 for dark atmosphere and GPT-6.1 Sol for a cleaner ship; the poster picks Claude Opus 5.5 for atmosphere.X post
Voxel ship in a bottle, $0.21 vs $9.81@vib3codedKimi K3.1 Pro—$0.21—Author’s pickX post
Voxel ship in a bottle, $0.21 vs $9.81@vib3codedGPT-6.1 Sol—$9.81——X post
Motion and detail test at top effort@kqyno7Kimi K3.1 Pro———The poster says Kimi K3.1 Pro was beaten on every count and half-jokes that it was routed to a fake K3.1.X post
Motion and detail test at top effort@kqyno7GPT-6.1 Sol———Author’s pickX post

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

Quick facts

ModelVendorReleasedInput $/1M tokensOutput $/1M tokensContext (tokens)Official links
GPT-6.1 SolOpenAI2026-09-29$2prompts up to 272K tokens$10prompts up to 272K tokens1,050,000Model docs
Kimi K3.1 ProMoonshot AI2026-10-231,000,000Tech blog · Announcement

From the vendors’ official pages, checked 2026-10-24. 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

5

Models

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