Muse Spark Open vs Qwen3.8 27B
| Spec | Muse Spark Open | Qwen3.8 27B |
|---|---|---|
| Respan Index | 42.8 (#53) | 42.1 (#54) |
| Blended price per 1M | $2 | $0.154 |
| Context window | 1.0M | 262K |
| Input / output per 1M | $1.25 / $4.25 | $0.039 / $0.5 |
| Max output | - | - |
| Input | text, vision, video, audio | text, vision |
| Released | 2026-10-15 | 2026-08-14 |
Respan Index by category
Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.
| Category | Muse Spark Open | Qwen3.8 27B |
|---|---|---|
| Coding | 21.7 Muse Spark Open | 23.6 Qwen3.8 27B |
| Agents | 44.5 Muse Spark Open | 56.1 Qwen3.8 27B |
| Reasoning | 50.1 Muse Spark Open | 39.3 Qwen3.8 27B |
| Knowledge & language | 56.6 Muse Spark Open | 40.5 Qwen3.8 27B |
| Human preference | 54.0 Muse Spark Open | 55.4 Qwen3.8 27B |
Benchmarks both report
Qwen3.8 27B leads on 3 of the 3 benchmarks both report. Higher is better. Each score links to where it was published.
| Benchmark | Muse Spark Open | Qwen3.8 27B |
|---|---|---|
| APEX-Agents (Mercor) | 33.4% | 47.5% |
| GPQA Diamond | 89% | 89.2% |
| LMArena WebDev (LMArena) | 1526 | 1590 |
FAQ
Is Muse Spark Open better than Qwen3.8 27B?
Muse Spark Open scores 42.8 on the Respan Index (#53), ahead of Qwen3.8 27B at 42.1 (#54). Qwen3.8 27B leads on 3 of the 3 benchmarks both report.
Which is cheaper, Muse Spark Open or Qwen3.8 27B?
Muse Spark Open lists at $1.25 input and $4.25 output per 1M tokens; Qwen3.8 27B at $0.039 and $0.5. Qwen3.8 27B is 13x cheaper per token at list price.
Which has the larger context window?
Muse Spark Open accepts 1.0M tokens and Qwen3.8 27B 262K tokens.