Muse Spark 1.2 vs Solar Pro 4
| Signal | Muse Spark 1.2 | Delta | Solar Pro 4 |
|---|---|---|---|
Capabilities | 100 | +33 | |
Pricing | 96 | -4 | |
Context window size | 96 | +5 | |
Recency | 100 | -- | |
Output Capacity | 96 | +14 | |
| Overall Result | 3 wins | of 5 | 1 wins |
Score History
80.9
current score
Muse Spark 1.2
right now
40
current score
Muse Spark 1.2
meta
Solar Pro 4
Upstage
Solar Pro 4 saves you $310.50/month
That's $3726.00/year compared to Muse Spark 1.2 at your current usage level of 100K calls/month.
| Metric | Muse Spark 1.2 | Solar Pro 4 | Winner |
|---|---|---|---|
| Overall Score | 81 | 40 | Muse Spark 1.2 |
| Rank | #84 | #294 | Muse Spark 1.2 |
| Quality Rank | #84 | #294 | Muse Spark 1.2 |
| Adoption Rank | #84 | #294 | Muse Spark 1.2 |
| Parameters | -- | -- | -- |
| Context Window | 1049K | 524K | Muse Spark 1.2 |
| Pricing | $1.25/$4.25/M | $0.09/$0.36/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 67 | Muse Spark 1.2 |
| Pricing | 96 | 100 | Solar Pro 4 |
| Context window size | 96 | 91 | Muse Spark 1.2 |
| Recency | 100 | 100 | Muse Spark 1.2 |
| Output Capacity | 96 | 82 | Muse Spark 1.2 |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 81/100 (rank #84), placing it in the top 71% of all 290 models tracked.
Scores 40/100 (rank #294), placing it in the top -1% of all 290 models tracked.
Muse Spark 1.2 has a 41-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.
Choose Muse Spark 1.2 when you need:
- Processing long documents or large codebases (1049K token context)
- Multimodal workflows that require image understanding
- Step-by-step reasoning and chain-of-thought problem solving
Choose Solar Pro 4 when you need:
- High-volume production workloads where API costs must be minimized
- Step-by-step reasoning and chain-of-thought problem solving
Solar Pro 4 offers 92% better value per quality point. At 1M tokens/day, you'd spend $6.75/month with Solar Pro 4 vs $82.50/month with Muse Spark 1.2 - a $75.75 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Solar Pro 4 also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1049K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.36/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (81/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Muse Spark 1.2 clearly outperforms Solar Pro 4 with a significant 40.900000000000006-point lead. For most general use cases, Muse Spark 1.2 is the stronger choice. However, Solar Pro 4 may still excel in niche scenarios.
By Use Case
Best for Quality
Muse Spark 1.2
Marginally better benchmark scores; both are excellent
Best for Cost
Solar Pro 4
92% lower pricing; better value at scale
Best for Reliability
Muse Spark 1.2
Higher uptime and faster response speeds
Best for Prototyping
Muse Spark 1.2
Stronger community support and better developer experience
Best for Production
Muse Spark 1.2
Wider enterprise adoption and proven at scale
by meta
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Reliability - Higher uptime and faster response speeds
- Choose for Prototyping - Stronger community support and better developer experience
- Choose for Production - Wider enterprise adoption and proven at scale
| Capability | Muse Spark 1.2 | Solar Pro 4 |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Searchdiffers | ||
| Image Output |
Muse Spark 1.2
meta
Solar Pro 4
Upstage
Solar Pro 4 saves you $6.76/month
That's 92% cheaper than Muse Spark 1.2 at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Muse Spark 1.2 | Solar Pro 4 |
|---|---|---|
| Context Window | 1.0M | 524K |
| Max Output Tokens | 943,718 | 131,072 |
| Open Source | No | No |
| Created | Aug 5, 2026 | Aug 10, 2026 |