Astra Assistant API vs OpenLM

Side-by-side comparison of two AI agent tools

Short answer

  • Pick Astra Assistant API for: drop in replacement for the OpenAI Assistants API. Pick OpenLM for: openAI-compatible Python client that can call any LLM.

From GitHub data refreshed daily.

Drop in replacement for the OpenAI Assistants API

OpenLMopen-source

OpenAI-compatible Python client that can call any LLM

Metrics

Astra Assistant APIOpenLM
Stars207368
Star velocity /mo-0.15873015873015872-0.47619047619047616
Commits (90d)00
Releases (6m)00
Overall score0.134796082875479760.12773224683762688

Pros

  • +与 OpenAI Assistants API v2 完全兼容，支持无缝迁移现有代码
  • +支持数十种 LLM 提供商和本地模型，避免厂商锁定
  • +基于 Apache Cassandra 的 AstraDB 后端提供企业级可扩展性和性能
  • +Drop-in OpenAI compatibility requires minimal code changes (single import line)
  • +Multi-provider support enables batch processing across different models and providers simultaneously
  • +Lightweight architecture calls APIs directly without bloated SDK dependencies

Cons

  • -需要配置和管理 AstraDB 实例，增加了基础设施复杂性
  • -社区规模相对较小，生态系统和第三方集成不如 OpenAI 官方 API 丰富
  • -自托管部署需要额外的运维和安全管理工作
  • -Currently limited to Completion endpoint only, lacking support for newer OpenAI features like Chat completions
  • -Relatively small community with 371 GitHub stars compared to official SDKs
  • -May lag behind latest provider API updates due to abstraction layer maintenance overhead

Use Cases

  • •从 OpenAI Assistants API 迁移，同时保持代码兼容性和添加多提供商支持
  • •构建需要数据主权和本地部署的企业级 AI 助手应用
  • •开发多模型 AI 应用，需要在不同 LLM 提供商之间进行成本优化和性能比较
  • •Model comparison and evaluation by running identical prompts across multiple LLM providers
  • •Implementing fallback strategies when primary models are unavailable or rate-limited
  • •Cost optimization by routing requests to the most economical provider for specific use cases
View Astra Assistant API DetailsView OpenLM Details

FAQ

Which is more popular, Astra Assistant API or OpenLM?
OpenLM has more GitHub stars (368 vs 207).
Which is more actively developed, Astra Assistant API or OpenLM?
Astra Assistant API had more commits in the last 90 days (0 vs 0).
Should I use Astra Assistant API or OpenLM?
Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.
Astra Assistant API vs OpenLM (2026): GitHub Stats, Features & Which to Choose