GPT-6.1 Terra vs Kimi K3.1 Pro

aka OpenAI GPT-6.1 Terra vs Moonshot AI Kimi K3.1 Pro

12 posts90 likes10.2K views

  • Author picksKimi K3.1 Pro1–0
  • CheaperGPT-6.1 Terra6/7 postsmedian gap ~4.9×
  • FasterGPT-6.1 Terra8/8 postsmedian gap ~4.1×

As stated in each post, not a controlled benchmark.

Posts

12

Same prompt, separate runs

5

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

About this matchup

GPT-6.1 Terra vs Kimi K3.1 Pro in real side-by-side tests: 12 posts from X where both got the same prompt; 9 posts report cost or time. Judge coding ability from the actual outputs.

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

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

Author picks: where the author preferred one of the two, they picked Kimi K3.1 Pro once and GPT-6.1 Terra never. That covers 1 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 Terra or Kimi K3.1 Pro?

7 posts state a cost for both: GPT-6.1 Terra was cheaper in 6; Kimi K3.1 Pro in 1 (median gap ~4.9×). These are the costs the posts state for each run, not list prices.

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

8 posts state a time for both: GPT-6.1 Terra was faster in all 8 (median gap ~4.1×). Times are as stated in each post; tools and settings differ between posts.

Summary

GPT-6.1 Terra and Kimi K3.1 Pro appear together in 12 posts on X: satellite Mesh Blackout benchmark, four models in OpenCode (@AlicanKiraz0), four builds each: Argon, Kimi, Terra and Opus (@DanielZambrini), lighthouse challenge, Terra vs Kimi K3.1 Pro (@LatentOperatorX), pelican biking a coast road day to night, three models (@techfren), 3D supercar, Terra vs Sonnet vs Sol vs Kimi (@marcthecreatorr) and 7 more. 7 of them are part of larger lineups with other models. The 5 most-viewed examples: In @EnvolDev's Eiffel Tower benchmark, GPT-6.1 Terra debut, GPT-6.1 Terra was cheaper ($0.44 vs $3.12), as reported in the post. In @marcthecreatorr's 3D supercar, Terra vs Sonnet vs Sol vs Kimi, GPT-6.1 Terra was faster (5 min vs 1 h 15 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 $0.85) and faster (10.9 min vs 20.9 min), as reported in the post. In @AndyL5cc's pixel city skyline, Kimi K3.1 Pro vs GPT-6.1 Terra, GPT-6.1 Terra was cheaper ($0.20 vs $1.50) and faster (2 min vs 10 min), as reported in the post. In @AskClash's burning car, Kimi K3.1 Pro vs GPT-6.1 Terra, GPT-6.1 Terra was cheaper ($0.24 vs $0.63) and faster (8.3 min vs 23.8 min) and Kimi K3.1 Pro used fewer tokens (877.3K tokens vs 1.2M tokens), as reported in the post. The table below lists all 9 posts with numbers for both.

What each post reports

GPT-6.1 Terra vs Kimi K3.1 Pro: cost, time and tokens as stated in each post
PostModelTimeCostTokensAuthor’s verdictPost
Satellite Mesh Blackout benchmark, four models in OpenCode@AlicanKiraz0Kimi K3.1 Pro20.9 min$0.85——X post
Satellite Mesh Blackout benchmark, four models in OpenCode@AlicanKiraz0GPT-6.1 Terra10.9 min$0.42——X post
Four builds each: Argon, Kimi, Terra and Opus@DanielZambriniKimi K3.1 Pro————X post
Four builds each: Argon, Kimi, Terra and Opus@DanielZambriniGPT-6.1 Terra————X post
Lighthouse challenge, Terra vs Kimi K3.1 Pro@LatentOperatorXGPT-6.1 Terra9.1 min$0.35——X post
Lighthouse challenge, Terra vs Kimi K3.1 Pro@LatentOperatorXKimi K3.1 Pro17.8 min$0.29——X post
Pelican biking a coast road day to night, three models@techfrenGPT-6.1 Terra————X post
Pelican biking a coast road day to night, three models@techfrenKimi K3.1 Pro————X post
3D supercar, Terra vs Sonnet vs Sol vs Kimi@marcthecreatorrGPT-6.1 Terra5 min———X post
3D supercar, Terra vs Sonnet vs Sol vs Kimi@marcthecreatorrKimi K3.1 Pro1 h 15 min———X post
Infinite zoom pelican on a bicycle, three models@techfrenGPT-6.1 Terra————X post
Infinite zoom pelican on a bicycle, three models@techfrenKimi K3.1 Pro————X post
Burning car, Kimi K3.1 Pro vs GPT-6.1 Terra@AskClashKimi K3.1 Pro23.8 min$0.63877,300—X post
Burning car, Kimi K3.1 Pro vs GPT-6.1 Terra@AskClashGPT-6.1 Terra8.3 min$0.241,190,000—X post
Mount Doom scene, Kimi K3.1 Pro vs GPT-6.1 Terra@ItsCuthulhuKimi K3.1 Pro31.4 min———X post
Mount Doom scene, Kimi K3.1 Pro vs GPT-6.1 Terra@ItsCuthulhuGPT-6.1 Terra9.3 min———X post
Voxel Hogwarts, Kimi K3.1 Pro vs GPT-6.1 Terra@ItsCuthulhuKimi K3.1 Pro37 min$1.313,960,000—X post
Voxel Hogwarts, Kimi K3.1 Pro vs GPT-6.1 Terra@ItsCuthulhuGPT-6.1 Terra4 min$0.271,820,000—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@sshayahmetKimi K3.1 Pro1 h 30 min$3.587,270,000—X post
Pixel city skyline, Kimi K3.1 Pro vs GPT-6.1 Terra@AndyL5ccKimi K3.1 Pro10 min$1.50—Author’s pickX post
Pixel city skyline, Kimi K3.1 Pro vs GPT-6.1 Terra@AndyL5ccGPT-6.1 Terra2 min$0.20——X post
Eiffel Tower benchmark, GPT-6.1 Terra debut@EnvolDevGPT-6.1 Terra5.5 min$0.44——X post
Eiffel Tower benchmark, GPT-6.1 Terra debut@EnvolDevKimi K3.1 Pro—$3.12——X 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 TerraOpenAI2026-10-26Announcement
Kimi K3.1 ProMoonshot AI2026-10-231,000,000Tech blog · Announcement

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

1

Models

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