Kimi K3 vs Muse Spark Open
aka Kimi K3 vs Muse-Spark-Open-816B-A42B
- CheaperMuse Spark Open1/1 postsmedian gap ~2.6×
As stated in each post, not a controlled benchmark.
Posts
1
About this matchup
Kimi K3 vs Muse Spark Open in real side-by-side tests: 1 post from X where both got the same prompt; 1 post reports cost or time. Judge coding ability from the actual outputs.
Kimi K3 vs Muse Spark Open: which is better for coding?
Which is better for coding, Kimi K3 or Muse Spark Open?
None of the 1 post here names one of the two as the better result, so judge the outputs above for the work you care about.
Which is cheaper, Kimi K3 or Muse Spark Open?
1 post states a cost for both: Muse Spark Open was cheaper in it (~2.6× cheaper). These are the costs the posts state for each run, not list prices.
What have Kimi K3 and Muse Spark Open been tested on?
The most-viewed of the 1 post: retro space shooter (@alexfacethesun). Categories: Games.
Summary
Kimi K3 and Muse Spark Open appear together in 1 post on X: retro space shooter (@alexfacethesun). It is part of larger lineups with other models. In @alexfacethesun's retro space shooter, Muse Spark Open was cheaper ($0.027 vs $0.071), as reported in the post.
What each post reports
| Post | Model | Time | Cost | Tokens | Author’s verdict | Post |
|---|---|---|---|---|---|---|
| Retro space shooter@alexfacethesun | Muse Spark Open | — | $0.027 | — | They say Muse Spark Open built the best-looking game, but DeepSeek V4.1 Flash followed the brief better for a third of the price; Kimi K3 repeated its waves and was the most expensive run | X post |
| Retro space shooter@alexfacethesun | Kimi K3 | — | $0.071 | — | They say Muse Spark Open built the best-looking game, but DeepSeek V4.1 Flash followed the brief better for a third of the price; Kimi K3 repeated its waves and was the most expensive run | X post |
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 |
|---|---|---|---|---|---|---|
| Kimi K3 | Moonshot AI | |||||
| Muse Spark Open | Meta | 2026-10-15 | 1,000,000 | Launch post · Model page · Weights (Hugging Face) · Announcement on X |
From the vendors’ official pages, checked 2026-10-21. 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- Retro space shooterThey say Muse Spark Open built the best-looking game, but DeepSeek V4.1 Flash followed the brief better for a third of the price; Kimi K3 repeated its waves and was the most expensive run.— the author’s view, @alexfacethesun (paraphrased)
Prompts shown in the posts
A retro space shooter with three enemy wave types and a boss at 20 seconds, particle explosions, score and level counters. Include an autoplay mode that starts on load. — @alexfacethesun