GPT-6.1 Sol vs Kimi K3.1 Pro
aka Sol 6.1 vs Moonshot AI Kimi K3.1 Pro
- 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
12Blender axe, five models side by side: GPT-6.1 Terra, GPT-6.1 Sol, Kimi K3.1 Pro, DeepSeek V4.1 Flash 1017, Gemini 4 Argon. Posted by @sshayahmet.
Eiffel Tower benchmark, GPT-6.1 Terra debut: GPT-6.1 Terra, GPT-6.1 Sol, Kimi K3.1 Pro, Muse Spark 1.3. Posted by @EnvolDev.
Temple Run–style endless runner, three endpoints: Kimi K3.1 Pro, GPT-6.1 Sol, Claude Opus 5.5. Posted by @novita_labs.
Halloween pumpkin patch, three models: Claude Opus 5.5, GPT-6.1 Sol, Kimi K3.1 Pro. Posted by @HavisT83099.
Glowing 3D Tokyo city, Kimi K3.1 Pro vs GPT-6.1 Sol: Kimi K3.1 Pro, GPT-6.1 Sol. Posted by @tamacoin_tamao.
Halloween grim reaper 3D model, three models: GPT-6.1 Sol, DeepSeek V4.1 Flash 1017, Kimi K3.1 Pro. Posted by @LatentOperatorX.
Pure-code 3D scene, both on max: Kimi K3.1 Pro, GPT-6.1 Sol. Posted by @Laplace_Gjn.
Blender scene recreation from references: Kimi K3.1 Pro, GPT-6.1 Sol. Posted by @notjazii.
Haunted ship, one try each: Kimi K3.1 Pro, Claude Opus 5.5, GPT-6.1 Sol. Posted by @olezhavich.
Voxel ship in a bottle, $0.21 vs $9.81: Kimi K3.1 Pro, GPT-6.1 Sol. Posted by @vib3coded.
Motion and detail test at top effort: Kimi K3.1 Pro, GPT-6.1 Sol. Posted by @kqyno7.
Same prompt, separate runs
6Not 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
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 |
|---|---|---|---|---|---|---|
| GPT-6.1 Sol | OpenAI | 2026-09-29 | $2prompts up to 272K tokens | $10prompts up to 272K tokens | 1,050,000 | Model docs |
| Kimi K3.1 Pro | Moonshot AI | 2026-10-23 | 1,000,000 | Tech 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- Halloween grim reaper 3D model, three modelsThe poster gives the trophy to GPT-6.1 Sol and asks whether it is worth three times the price.— the author’s view, @LatentOperatorX (paraphrased)
- Blender scene recreation from referencesThe poster says both added a lot of detail, but GPT-6.1 Sol had much better lighting and textures.— the author’s view, @notjazii (paraphrased)
- Haunted ship, one try eachKimi 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.— the author’s view, @olezhavich (paraphrased)
- Voxel ship in a bottle, $0.21 vs $9.81Sol has more detail, but the poster picks Kimi K3.1 Pro and would not pay that much more for the extra detail.— the author’s view, @vib3coded (paraphrased)
- Motion and detail test at top effortThe poster says Kimi K3.1 Pro was beaten on every count and half-jokes that it was routed to a fake K3.1.— the author’s view, @kqyno7 (paraphrased)






















