Hardest reasoning tasks
Choose Muse Spark 1.2
Muse Spark 1.2 scores 39.6 on the Artificial Analysis Intelligence Index, against 36 for DeepSeek V4 Pro.
DeepSeek V4 Pro vs Muse Spark 1.2: price, context and capabilities
Choose Muse Spark 1.2 for the hardest reasoning tasks; on the other points the two are level or the data is missing.
In short
- A price comparison is not possible: one of them has no comparable published price.
- Muse Spark 1.2 reads more per request: 1.05M tokens against 1M.
- Only DeepSeek V4 Pro offers reasoning, structured output, prompt caching.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Reasoning over long documents
Either one
They are practically level on Long-context reasoning (AA-LCR) (80.3% and 79%).
Specifications side by side
| DeepSeek V4 Pro | Muse Spark 1.2 | |
|---|---|---|
| Provider | DeepSeek | Meta |
| Category | Language models | Language models |
| Status | Generally available | Legacy |
| Headline price | $1.98 / 1M tokens | No data |
| Input | $1.32 / 1M tokens | No data |
| Output | $3.96 / 1M tokens | No data |
| Cached input | $0.044 / 1M tokens | No data |
| Context window | 1M | 1.05M |
| Max output | 384k | No data |
| Released | August 2026 | Aug 5, 2026 |
| Knowledge cutoff | No data | No data |
| Licence | Proprietary | Proprietary |
| Capabilities | Reasoning, Tool calling, Structured output, Prompt caching | Tool calling |
| API model id | deepseek-v4-pro | muse-spark-1.2 |
Benchmarks side by side
Leader in bold.
| Benchmark | DeepSeek V4 Pro | Muse Spark 1.2 |
|---|---|---|
| Intelligence Index | 36 | 39.6 |
| SciCode | 51% | 57.4% |
| GPQA Diamond | 92.8% | 90.4% |
| Humanity's Last Exam | 41% | 45.5% |
| Long-context reasoning (AA-LCR) | 80.3% | 79% |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose DeepSeek V4 Pro or Muse Spark 1.2?
Choose Muse Spark 1.2 for the hardest reasoning tasks; on the other points the two are level or the data is missing.
Which is cheaper, DeepSeek V4 Pro or Muse Spark 1.2?
A price comparison is not possible: one of them has no comparable published price.
Which has the larger context window, DeepSeek V4 Pro or Muse Spark 1.2?
Muse Spark 1.2 reads more per request: 1.05M tokens against 1M.
What is the difference between DeepSeek V4 Pro and Muse Spark 1.2?
DeepSeek V4 Pro is made by DeepSeek and Muse Spark 1.2 by Meta. A price comparison is not possible: one of them has no comparable published price. Muse Spark 1.2 reads more per request: 1.05M tokens against 1M. Only DeepSeek V4 Pro offers reasoning, structured output, prompt caching.