# Muse Spark Open vs RouterPlus (slim)

> Muse Spark Open scores 53.4 (D) to RouterPlus's 51.2 (D) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/muse-spark-open-vs-routerplus.md (~3,000 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/muse-spark-open-vs-routerplus.json · canonical https://www.anchorterminal.com/compare/muse-spark-open-vs-routerplus
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-15
- Licence: CC BY 4.0, credit Anchor Terminal (anchorterminal.com) and link this page when you pass anything on

Muse Spark Open scores 53.4 (D) on agent readiness against RouterPlus's 51.2 (D), and leads in 4 of 7 scored categories. RouterPlus leads on security & auth. Both do llm inference.

- Muse Spark Open: D 53.4, rank #760 of 1095 · https://www.anchorterminal.com/tools/muse-spark-open.min.md
- RouterPlus: D 51.2, rank #816 of 1095 · https://www.anchorterminal.com/tools/routerplus.min.md
- Muse Spark Open, good for A team with a four-GPU Blackwell node, or two to four Mac Studios, that wants a 1M-token multimodal coding and agent model on its own hardware with no prompts leaving it. Ahead on Payments & pricing, 50 against 40; Maintenance & community, 60 against 44; Transparency & trust, 53 against 38. Also No key needed to call it.
- RouterPlus, good for Teams that call Claude and GPT models from one key and want the cost of every call in the response, with their own provider keys where they have them. Ahead on Security & auth, 62 against 44. Also A hosted endpoint, with nothing to install.

| Category | Muse Spark Open | RouterPlus |
| --- | --- | --- |
| Reliability (16%) | 42 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 61 | 59 |
| Agent ergonomics (13%) | 69 | 71 |
| Security & auth (14%) | 44 | 62 |
| Payments & pricing (10%) | 50 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 60 | 44 |
| Transparency & trust (7%) | 53 | 38 |

| Fact (where they differ) | Muse Spark Open | RouterPlus |
| --- | --- | --- |
| Kind | Model API | Model router |
| Vendor | Meta | RouterPlus |
| Hosted endpoint | no (local only) | `https://api.routerplus.com/v1` |
| Auth | None | API key |
| Pricing | Free | Pay per use |
| Licence | Muse Model Licence (source-available weights, not an OSI licence), free of charge with an attribution notice, a separate agreement with Meta before Model as a Service by a licensee group above $20M gross revenue, and the Muse Spark Open Usage Policy | Closed service. No terms of service for the gateway were found on routerplus.com or app.routerplus.com on 13 October 2026. The only terms on the site govern the capacity request form and name EVO HQ Inc, a Delaware corporation (https://routerplus.com/capacity/terms/). |
| Last release | 2026-10-15 | none |
| Terms last updated |  | no document linked |