text model comparison
Muse Glimmer vs Solar Pro 4
Muse Glimmer and Solar Pro 4 are both current text models, from Meta and Upstage. On Arena Text, Muse Glimmer scores 1425 Elo and Solar Pro 4 1386 Elo (Arena, measured October 8, 2026). Solar Pro 4 has the larger context window, 512,000 vs 131,072 tokens.
- Higher Arena Text
- Muse Glimmer1425 Elo against 1386 Elo
- Longer context window
- Solar Pro 4512K tokens against 131K tokens
- Newer release
- Muse GlimmerAug 2026 against Aug 2026
Data verified October 13, 2026 · Dataset 2026-10-29
Side by side
Muse Glimmer and Solar Pro 4, line by line
Prices in effect today, compared at the same tier wherever both list one. The better value in each row is highlighted.
| Fact | Muse Glimmer | Solar Pro 4 |
|---|---|---|
| Price | ||
| Price per 1M input tokens | Not listed | $0.30 |
| Price per 1M output tokens | Not listed | $1.20 |
| Independent benchmarks | ||
| Arena Text | 1425 Elo (#39 of 47) (better) | 1386 Elo (#43 of 47) |
| Specs | ||
| Provider | Meta | Upstage |
| Release date | August 10, 2026 | August 6, 2026 |
| Access | open weights | API only |
| Context window | 131,072 tokens | 512,000 tokens |
| Max output | Not reported | 128,000 tokens |
| Input | text, image | text |
| Output | text | text |
Scores:Arena · 2026-10-12
Charts
Against every current text model
Where Muse Glimmer and Solar Pro 4 land among the current models of their task, on every independent benchmark, on price and on context.
Where each stands
On Arena Text, Muse Glimmer ranks #39 and Solar Pro 4 #43 of 47 current models. Each bar is the share of current models it beats: on score, price and context.
Independent benchmarks
Arena Text
Muse Glimmer:#39of 47
1,425 Elo · ahead of 17%
Solar Pro 4:#43of 47
1,386 Elo · ahead of 9%
Price and context
Price per 1M input tokens
Muse Glimmer: Not listed
Solar Pro 4:#11of 51
$0.30 · cheaper than 76%
Price per 1M output tokens
Muse Glimmer: Not listed
Solar Pro 4:#10of 51
$1.20 · cheaper than 78%
Context window
Muse Glimmer:#58of 64
131K tokens · longer than 10%
Solar Pro 4:#51of 64
512K tokens · longer than 21%
Quality against price
Solar Pro 4 scores 1,386 at $0.525 (blended price per 1M tokens). The line joins the current models no other beats on both price and Arena Text score; hover any point to name it.
Quality against price: the data
| Model | Provider | Blended price per 1M tokens | Arena Text (Elo) |
|---|---|---|---|
| Gemini 4 Argon | $4 | 1,525 | |
| Claude Opus 5.5 | Anthropic | $8 | 1,507 |
| Claude Fable 5 | Anthropic | $20 | 1,504 |
| Claude Fable 5.1 | Anthropic | $20 | 1,501 |
| Gemini 3.8 Flash | $1.50 | 1,497 | |
| Muse Spark 1.3 | Meta | $2 | 1,494 |
| Claude Opus 5 | Anthropic | $10 | 1,490 |
| Kimi K3 | Moonshot Kimi | $6 | 1,488 |
| GPT-5.6 Sol | OpenAI | $8 | 1,485 |
| GPT-6.1 Sol | OpenAI | $4 | 1,484 |
| Qwen3.8-Max | Alibaba Qwen | $3 | 1,483 |
| GPT-5.5 | OpenAI | $11 | 1,482 |
| Gemini 3.6 Flash | $3 | 1,482 | |
| Claude Opus 4.8 | Anthropic | $10 | 1,481 |
| MiMo-V2.6-Pro | Xiaomi MiMo | $0.54 | 1,480 |
| GLM-5.3 | Z.ai | $2.15 | 1,478 |
| Claude Sonnet 5.5 | Anthropic | $4 | 1,476 |
| GPT-5.4 | OpenAI | $5.63 | 1,475 |
| GPT-6 Astra | OpenAI | $20 | 1,475 |
| DeepSeek-V4.1-Flash | DeepSeek | $0.52 | 1,475 |
| GLM-5.3-Flash | Z.ai | $0.24 | 1,475 |
| Gemini 3 Flash Preview | $1.13 | 1,473 | |
| Grok 4.20 | xAI | $1.56 | 1,472 |
| GPT-5.6 Terra | OpenAI | $4.50 | 1,466 |
| Grok 4.5 | xAI | $3 | 1,466 |
| DeepSeek-V4-Pro | DeepSeek | $1.98 | 1,465 |
| Claude Sonnet 5 | Anthropic | $4 | 1,461 |
| GPT-6 Sol | OpenAI | $4 | 1,456 |
| Gemini 3.5 Flash-Lite | $0.85 | 1,455 | |
| Grok 4.6 | xAI | $3 | 1,454 |
| GPT-5.6 Luna | OpenAI | $0.45 | 1,452 |
| MiMo-V2.6-Flash | Xiaomi MiMo | $0.18 | 1,451 |
| GPT-6 Luna | OpenAI | $0.20 | 1,443 |
| Grok 4.7 | xAI | $3 | 1,443 |
| Grok 4.3 | xAI | $1.56 | 1,442 |
| Mistral Large 4 | Mistral AI | $2.06 | 1,429 |
| GPT-4.1 | OpenAI | $3.50 | 1,415 |
| Solar Pro 4 | Upstage | $0.52 | 1,386 |
| GPT-4.1 mini | OpenAI | $0.70 | 1,383 |
| GPT-4.1 nano | OpenAI | $0.18 | 1,322 |
Cost
What each costs
Example workloads at each provider's listed rates, then every other rate either one lists. The cheaper figure in each row is highlighted.
| Workload or rate | Muse Glimmer | Solar Pro 4 |
|---|---|---|
| Other listed rates | ||
| 1M input tokens, cached | Not listed | $0.06 |
Verdict
When to choose each
Muse Glimmer
Where it leads
- Higher Arena Text score, 1425 Elo vs 1386 Elo
- Accepts image input
- Open weights you can run yourself
Best for
- Local or on-device coding agents on a single GPU
- Fine-tuning an Apache 2.0 multimodal base
Watch out for
- Self-hosted only: Meta does not serve it over its Model API, so there is no first-party per-token price
- Audio is not supported and video is read as individual frames; the default context is 128K tokens
Solar Pro 4
Where it leads
- Larger context window 512,000 vs 131,072 tokens
- A cached-input rate, $0.06 per 1M tokens
Best for
- Korean and Japanese enterprise workloads
- Multi-step agent work with tool calls
Watch out for
- A closed model: Upstage does not disclose its parameter count
- Several of its published benchmark figures are in-house evaluations
From benchmark to production
Building on Muse Glimmer or Solar Pro 4?
Public scores rarely hold on your own data. We test both models on your real tasks, then build the agent or pipeline around the one that wins.
FAQ
Muse Glimmer vs Solar Pro 4 FAQ
Do Muse Glimmer and Solar Pro 4 discount cached input?
Solar Pro 4 lists a cached-input rate of $0.06 per 1M tokens, 80% below its standard input rate. No cached-input rate is listed for Muse Glimmer.
Which scores higher on independent benchmarks, Muse Glimmer or Solar Pro 4?
Muse Glimmer leads on Arena Text, 1425 Elo to 1386 Elo. Scores are independent evaluations, not either vendor's launch figures.
Which has the larger context window, Muse Glimmer or Solar Pro 4?
Solar Pro 4 has the larger context window, 512,000 vs 131,072 tokens.
How do Muse Glimmer and Solar Pro 4 differ in features?
Muse Glimmer takes text and image input; Solar Pro 4 takes text.
Can I run Muse Glimmer or Solar Pro 4 myself?
Muse Glimmer is released as open weights you can run yourself; Solar Pro 4 is available through its provider's API only.
Further reading
More on Muse Glimmer and Solar Pro 4
Articles on Muse Glimmer and Solar Pro 4
- Muse Glimmer: The Reported Local Agent Model, ReviewedAugust 12, 2026
Related comparisons
Production evaluation
Choosing between Muse Glimmer and Solar Pro 4?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty