Sierra
Sierra builds branded voice and chat agents for support, charging per resolved conversation rather than per seat.
Full Sierra record →Head to head
Sierra vs AutoGLM
Sierra (Sierra) and AutoGLM (Zhipu AI) both sit in Agents & Automation. AutoGLM shipped more tracked changes in the last 30 days (7 vs 1). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Sierra Sierra | AutoGLM Zhipu AI |
|---|---|---|
| Segment | Agents & Automation | Agents & Automation |
| Version | Agent OS 2.0 | GLM-5.3 |
| Entry cost | Pricing is not published (outcomes-based model: pay for results, not tokens). Contact sales. | from $18/mo |
| Pricing tiers | Outcome pricing free | GLM Coding Plan $18 |
| Model stack | Claude · GPT-5 class · Sierra Agent OS 2.0 | AutoGLM-Phone-Multilingual · CogVideoX-3 · GLM-4.6V · GLM-4.7 · GLM-5.2 · GLM-5.3 · GLM-5.3-Flash · GLM-ASR-2512 · GLM-Image · GLM-OCR |
| Context window | Model-dependent | 200K tokens |
| Public API | ||
| Routes models | ||
| Changes / 30d | 1 | 7 |
| Origin | Global | China |
| Capabilities | Voice and chat agents, Agent OS, Brand persona control, Supervisor tooling, Outcome analytics, Horizon (Long-horizon agents), Ghostwriter (Agent-building agent), Agent Studio 2.0 | Phone app control, Browser automation, Task replay, Scheduled tasks, Vision Language Models, Multilingual, multimodal, api |
AutoGLM
Zhipu's agent operates Android apps and web pages directly rather than calling APIs.
Full AutoGLM record →