Solar Pro 4 vs CoBuddy vs Muse Glimmer 30B
Too close to call on our weighted score (Solar Pro 4 53, Muse Glimmer 30B 53, CoBuddy 46). The right pick depends on what you value most.
UpstageSolar Pro 4
53/100- ECI—
- Price$0.30 / $1.20
- Context524K
BaiduCoBuddy
46/100- ECI—
- Price$0.28 / $1.13
- Context131K
MetaMuse Glimmer 30B
53/100- ECI—
- Price$0.30 / $1.20
- Context131K
Too close to call
It is close. Our weighted score puts them within a point (Solar Pro 4 53/100, Muse Glimmer 30B 53/100, CoBuddy 46/100), so choose by what matters most for your work: CoBuddy on price and Solar Pro 4 for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceCoBuddyCoBuddy $0.492 · Solar Pro 4 $0.525 · Muse Glimmer 30B $0.525 per 1M tokens (3:1 blend)
- Longest contextSolar Pro 4Solar Pro 4 524,288 · CoBuddy 131,072 · Muse Glimmer 30B 131,072 tokens
- Widest inputsMuse Glimmer 30BSolar Pro 4: Text · CoBuddy: Text · Muse Glimmer 30B: Text, Images
- Self-hostingMuse Glimmer 30BPublishes downloadable weights (Apache 2.0)
| Measure | Weight | Solar Pro 4 | CoBuddy | Muse Glimmer 30B |
|---|---|---|---|---|
| Price | 50% | 60 | 62 | 60 |
| Inputs & features | 30% | 45 | 35 | 60 |
| Context window | 20% | 49 | 25 | 25 |
| Overall | 100% | 53/100 | 46/100 | 53/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Solar Pro 4Upstage | CoBuddyBaidu | Muse Glimmer 30BMeta |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.30 | $0.28 (best) | $0.30 |
| Output | $1.20 | $1.13 (best) | $1.20 |
| Cached input | $0.06 | — | — |
| Blended (3:1) | $0.525 | $0.492 (best) | $0.525 |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official Upstage API | Median of 1 providers | Median of 11 providers |
| Limits | |||
| Context window | 524,288 tokens (best) | 131,072 tokens | 131,072 tokens |
| Max output | 131,072 tokens (best) | 65,536 tokens | 131,072 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | No | No | Yes |
| PDFs | No | No | No |
| Audio | No | No | No |
| Video | No | No | No |
| Reasoning | Yesminimal · low · medium · high · xhigh · max | Yes | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | No | No |
| Availability | |||
| Weights | Proprietary | Proprietary | OpenApache 2.0 |
| API model ID | solar-pro4 | — | — |
| API providers | 6 | 1 | 13 (best) |
| Released | Aug 6, 2026 | May 6, 2026 | Aug 10, 2026 |
| Knowledge cutoff | Feb 2026 | — | Jan 4, 2026 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Solar Pro 4$5.40
- CoBuddy$5.06
- Muse Glimmer 30B$5.40
Which should you choose?
Which is better: Solar Pro 4, CoBuddy or Muse Glimmer 30B?
It is close. Our weighted score puts them within a point (Solar Pro 4 53/100, Muse Glimmer 30B 53/100, CoBuddy 46/100), so choose by what matters most for your work: CoBuddy on price and Solar Pro 4 for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Solar Pro 4, CoBuddy or Muse Glimmer 30B?
CoBuddy is cheaper at $0.28 input / $1.13 output per million tokens (median across 1 API provider). Solar Pro 4 costs $0.30 input / $1.20 output per million tokens (official Upstage API price); Muse Glimmer 30B costs $0.30 input / $1.20 output per million tokens (median across 11 API providers). At a typical mix of three input tokens to one output token, that is $0.492 per million tokens for CoBuddy versus $0.525 for Solar Pro 4 (1.1× as much) and $0.525 for Muse Glimmer 30B (1.1× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Solar Pro 4 has not been scored yet, CoBuddy has not been scored yet and Muse Glimmer 30B has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Solar Pro 4, CoBuddy and Muse Glimmer 30B yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.
Which has the bigger context window?
Solar Pro 4 has the largest context window at 524,288 tokens, against 131,072 for CoBuddy and 131,072 for Muse Glimmer 30B. Maximum output per response: Solar Pro 4 up to 131,072, CoBuddy up to 65,536, Muse Glimmer 30B up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Solar Pro 4 accepts text; CoBuddy accepts text; Muse Glimmer 30B accepts text and images. Muse Glimmer 30B handles the widest range of inputs.
Are any of these open source?
Muse Glimmer 30B publishes its weights (Apache 2.0) and can be self-hosted; Solar Pro 4 and CoBuddy is proprietary.
Which is newer?
Muse Glimmer 30B is the newest, released Aug 10, 2026. Solar Pro 4 came out Aug 6, 2026; CoBuddy came out May 6, 2026. Knowledge cutoff: Solar Pro 4 Feb 2026, Muse Glimmer 30B Jan 4, 2026.
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 Nov 2, 2026.
