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Compare performance benchmarks, coding intelligence, reasoning evaluations, context limits, and API economics between Muse Spark Open (Meta) and DeepSeek V4.1 Flash (DeepSeek).
| Metric / Capability | Muse Spark Open | DeepSeek V4.1 Flash |
|---|---|---|
| Developer / Organization | Meta | DeepSeek |
| Release Date | 2026-10-15 | 2026-09-10 |
| Deployment / Weights | Open Weights | Open Weights |
| Context Window | 1.0M tokens (1,048,576 tokens) | 1.0M tokens (1,048,576 tokens) |
| Input Pricing (/1M Tokens) | Free (Open Weights) | Free (Open Weights) |
| Output Pricing (/1M Tokens) | Free (Open Weights) | Free (Open Weights) |
| Benchmark / Domain | Muse Spark Open | DeepSeek V4.1 Flash | Advantage |
|---|---|---|---|
Artificial Analysis Intelligence Index Composite index aggregating 10+ evaluations of general reasoning and knowledge. | — | 24.7% | — |
Artificial Analysis Coding Agent Index v2.0 Composite index of coding-agent systems (model + harness) across FrontierCode v1.1, SWE-Atlas-QnA, and Terminal-Bench v4. | 26.3% | 47.3% | DeepSeek V4.1 Flash (+80%) |
Terminal-Bench 4.0 Sandboxed command-line tasks requiring shell and file-system operation. | — | 42.3% | — |
ARC-AGI-2 Novel visual grid puzzles requiring abstract rule induction. | 57.5% | 72.9% | DeepSeek V4.1 Flash (+27%) |
GPQA Diamond Graduate-level physics, chemistry, and biology questions written by domain experts. | — | 90.9% | — |
FrontierMath v2 (Tiers 1-3) Unpublished, research-level mathematics problems across Tiers 1-3. | — | 67.4% | — |
Design Arena ELO Human-preference ELO across UI, 3D, data-visualization, and game-dev generations. | 1338 | — | — |
DeepSeek V4.1 Flash outperforms Muse Spark Open across 2 evaluated benchmarks compared to 0 for Muse Spark Open, excelling in Artificial Analysis Coding Agent Index v2.0, ARC-AGI-2.
Both models feature equivalent context windows of 1.0M tokens (1,048,576 tokens).
Both models have comparable pricing structures or open weight deployment options.
Muse Spark Open is an open-weights model. DeepSeek V4.1 Flash is an open-weights model.
Analyze 130+ models side-by-side using interactive radar charts, cost-efficiency quadrant plots, and live dataset filters on the full NeuBench index.
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