Lightweight OpenAI framework for multi-agent workflows with handoffs, guardrails and tracing.
WebsiteProvisional comparison
OpenAI Agents SDK vs Mastra
OpenAI Agents SDK is provisional S-tier and Mastra is provisional A-tier on Agent Frameworks & SDKs. Rankings are never for sale.
Full Agent Frameworks & SDKs tier list
| Field | OpenAI Agents SDK | Mastra |
|---|---|---|
| Tier | S · provisional | A · provisional |
| Why | First-party OpenAI SDK (30k+ stars); Agent Builder workflows export to it. | Leading TypeScript-native agent framework (28k+ stars). |
| Pricing | open-source | open-source / paid cloud |
| GitHub stars | 30,058 | 28,834 |
| Last push | Oct 15, 2026 | Oct 15, 2026 |
| Last verified | Oct 15, 2026 | Oct 15, 2026 |