Simular · siet Keine belegte Angabe für Agent S4 selbst; das arXiv-Paper (2610.28601) und die Ankündigung erschienen laut Quellen aktue · 2× · tolest 22. Okt. 2026
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Momentum
Agent S4 is Simular's next-generation autonomous computer-use agent. According to the paper "Evolving Agent Interfaces", it pairs Qwen3.8-27B with a repository of interfaces the system builds and revises itself, reaching 21.3% binary success on OSWorld V2. The figures come from the vendor and a preprint; no independent reproduction is documented.
Momentum-Verloop
24.07.22.10.
Features
| Autonomy Level | Autonomous: executes tasks on its own; Sai asks for approval before sign-ins and sensitive steps |
| Channels | Simular Cloud (cloud computer) or own Mac/Windows machine; Sai API |
| License | Apache-2.0 (Agent S open-source repository) |
| Modalities | Screen perception; clicking, typing, scrolling (GUI control) |
| Platform | Agent S (open-source framework): macOS, Linux, Windows |
| Price | Agent S4 not priced separately; Simular estimates USD 1.10 per task. Sai product: free tier, USD 50/month pay-as-you-go, USD 500/month unlimited (sources conflict on details). |
| Release Date | Announced October 2026 (arXiv 2610.28601); Qwen3.8-27B released August 14, 2026 |
| Tool/MCP Integrations | Sai API (POST /v1/agents/message); MCP server @simular-ai/sai-mcp for Claude Code, Codex, Cursor |