Muse Spark 1.1 vs DeepSeek V4.1 Flash
DeepSeek V4.1 Flash comes out ahead, 78 to 70 on our weighted score, and it is the cheaper option too.
MetaMuse Spark 1.1
70/100- ECI154.3
- Price$1.25 / $4.25
- Context1.05M
- Our pick
DeepSeekDeepSeek V4.1 Flash
78/100- ECI155.0
- Price$0.15 / $0.60
- Context1M
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Make it a three-way comparison.
DeepSeek V4.1 Flash is our pick
DeepSeek V4.1 Flash is the better all-round choice, scoring 78/100 against Muse Spark 1.1 (70). It leads on price. Muse Spark 1.1 wins on inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityDeepSeek V4.1 FlashCapabilities Index (ECI): DeepSeek V4.1 Flash 155.0 · Muse Spark 1.1 154.3
- Lowest priceDeepSeek V4.1 FlashDeepSeek V4.1 Flash $0.263 · Muse Spark 1.1 $2.00 per 1M tokens (3:1 blend)
- Longest contextMuse Spark 1.1Muse Spark 1.1 1,048,576 · DeepSeek V4.1 Flash 1,000,000 tokens
- Widest inputsMuse Spark 1.1Muse Spark 1.1: Text, Images, PDFs, Video · DeepSeek V4.1 Flash: Text, Images
- Self-hostingDeepSeek V4.1 FlashPublishes downloadable weights (MIT)
| Measure | Weight | Muse Spark 1.1 | DeepSeek V4.1 Flash |
|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 84 | 84 |
| Price | 25% | 36 | 77 |
| Inputs & features | 15% | 90 | 70 |
| Context window | 10% | 61 | 60 |
| Overall | 100% | 70/100 | 78/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Muse Spark 1.1Meta | DeepSeek V4.1 FlashDeepSeek |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | 154.3 | 155.0 (best) |
| ECI rank | #35 of 148 | #29 of 148 (best) |
| SimpleQA VerifiedShort factual questions | 57.8% | — |
| Price per million tokens | ||
| Input | $1.25 | $0.15 (best) |
| Output | $4.25 | $0.60 (best) |
| Cached input | $0.15 | $0.003 (best) |
| Blended (3:1) | $2.00 | $0.263 (best) |
| Long-context rate | Same rate | Same rate |
| Price source | Official Meta API | Official DeepSeek API |
| Limits | ||
| Context window | 1,048,576 tokens (best) | 1,000,000 tokens |
| Max output | 131,072 tokens | 384,000 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | Yes |
| PDFs | Yes | No |
| Audio | No | No |
| Video | Yes | No |
| Reasoning | Yesminimal · low · medium · high · xhigh | Yeslow · high · max |
| Tool calling | Yes | Yes |
| Structured output | Yes | Yes |
| Availability | ||
| Weights | Proprietary | OpenMIT |
| API model ID | muse-spark-1.1 | deepseek-flash |
| API providers | 13 | 50 (best) |
| Released | Jul 9, 2026 | Sep 10, 2026 |
| Knowledge cutoff | — | May 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Muse Spark 1.1$21.00
- DeepSeek V4.1 Flash$2.70
Which should you choose?
Which is better: Muse Spark 1.1 or DeepSeek V4.1 Flash?
DeepSeek V4.1 Flash is the better all-round choice, scoring 78/100 against Muse Spark 1.1 (70). It leads on price. Muse Spark 1.1 wins on inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, Muse Spark 1.1 or DeepSeek V4.1 Flash?
DeepSeek V4.1 Flash is cheaper at $0.15 input / $0.60 output per million tokens (official DeepSeek API price). Muse Spark 1.1 costs $1.25 input / $4.25 output per million tokens (official Meta API price). At a typical mix of three input tokens to one output token, that is $0.263 per million tokens for DeepSeek V4.1 Flash versus $2.00 for Muse Spark 1.1 (7.6× as much).
Which scores higher on benchmarks?
DeepSeek V4.1 Flash scores higher on the Capabilities Index (ECI): DeepSeek V4.1 Flash 155.0 (#29 of 148) and Muse Spark 1.1 154.3 (#35 of 148). The confidence ranges of the top two overlap (148.8–157.6 vs 152.2–157.1), so treat the gap as small.
Which is better for coding?
There are no published SWE-bench Verified results for Muse Spark 1.1 and DeepSeek V4.1 Flash yet, so there is no like-for-like coding score. On overall capability, DeepSeek V4.1 Flash leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.
Which has the bigger context window?
Muse Spark 1.1 has the largest context window at 1,048,576 tokens, against 1,000,000 for DeepSeek V4.1 Flash. Maximum output per response: Muse Spark 1.1 up to 131,072, DeepSeek V4.1 Flash up to 384,000 tokens.
Which can read images, PDFs, audio or video?
Muse Spark 1.1 accepts text, images, PDFs and video; DeepSeek V4.1 Flash accepts text and images. Muse Spark 1.1 handles the widest range of inputs.
Are any of these open source?
DeepSeek V4.1 Flash publishes its weights (MIT) and can be self-hosted; Muse Spark 1.1 is proprietary.
Which is newer?
DeepSeek V4.1 Flash is the newest, released Sep 10, 2026. Muse Spark 1.1 came out Jul 9, 2026. Knowledge cutoff: DeepSeek V4.1 Flash May 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
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