Muse Spark 1.2 vs Solar Pro 4
Muse Spark 1.2 leads the LLM Stats Score 41.1 to 36.0. Muse Spark 1.2 is 4.2x cheaper per token.
Meta · Upstage · Updated for 2026
Which is better?
Muse Spark 1.2 leads the overall LLM Stats Score 41.1 to 36.0, ranking #44 overall.
In the 1 individual benchmarks reported for both models, Muse Spark 1.2 wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, Muse Spark 1.2 is roughly 4.2x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Muse Spark 1.2 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Muse Spark 1.2
- overall performance matters — it scores 41.1 and ranks #44 on LLM Stats
- your work emphasizes coding and agents — it leads those capability indexes
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- cost matters — it's about 4.2x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
Choose Solar Pro 4
- you want the most recent training data — it shipped Aug 2026
At a glance
The differences that matter most.
Individual benchmarks
3 reported for Muse Spark 1.2 · 9 for Solar Pro 4
Muse Spark 1.2 outperforms in 1 benchmarks (Terminal-Bench 2.1), while Solar Pro 4 is better at 0 benchmarks.
Muse Spark 1.2 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Muse Spark 1.2 ($0.10/1M tokens) is 3.0x cheaper than Solar Pro 4 ($0.30/1M tokens).
For output processing, Muse Spark 1.2 ($0.20/1M tokens) is 6.0x cheaper than Solar Pro 4 ($1.20/1M tokens).
In conclusion, Solar Pro 4 is more expensive than Muse Spark 1.2.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Muse Spark 1.2 accepts 1,048,576 input tokens compared to Solar Pro 4's 524,288 tokens. Both models can generate responses up to 131,072 tokens.
Input capabilities
Documented input modalities across available providers
Muse Spark 1.2 supports multimodal inputs, whereas Solar Pro 4 does not.
Muse Spark 1.2 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Muse Spark 1.2
Solar Pro 4
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Muse Spark 1.2 was released on 2026-08-05, while Solar Pro 4 was released on 2026-08-06.
Solar Pro 4 is 0 month newer than Muse Spark 1.2.
Aug 5, 2026
3 weeks ago
Aug 6, 2026
3 weeks ago
1d newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Muse Spark 1.2 is available from Meta Model API. Solar Pro 4 is available from Upstage.
Muse Spark 1.2
Solar Pro 4
Outputs Comparison
Judge for yourself.
Run your own prompts against Muse Spark 1.2 and Solar Pro 4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Muse Spark 1.2 vs Solar Pro 4.