Developers building and evaluating custom agents.
Ask the vendor about pricing ↗FEATURES / FIT / TRADE-OFFS
Mastra vs Outlines
Mastra may fit developers building and evaluating custom agents. Outlines may fit developers composing agents, structured model outputs, and tool workflows. Compare your own workflow before making a choice; this page does not rank either platform as a universal winner.
Developers composing agents, structured model outputs, and tool workflows.
Ask the vendor about pricing ↗Compare the work, then the plan.Capabilities · fit · trade-offs · costs
| Compare by | Mastra | Outlines |
|---|---|---|
| What it does | TypeScript framework for agents, workflows, memory, and evaluation. | Generate structured outputs from language models with schema constraints. |
| Potential fit | Developers building and evaluating custom agents. | Developers composing agents, structured model outputs, and tool workflows. |
| Category | Agent frameworks | Agent frameworks |
| Key capabilities |
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| Look closer | Check licensing, maintenance status, supported providers, and hosting or inference costs. | Check licensing, provider compatibility, maintenance, and tool permissions. Test failure recovery before enabling agent actions. |
| Pricing & plans | Check current vendor pricingAsk the vendor about pricing ↗ | Check current vendor pricingAsk the vendor about pricing ↗ |
| Community rating | ||
| Vendor source | Official vendor website ↗ | Official vendor website ↗ |
| Explore | Read the profile ↗ | Read the profile ↗ |
Which platform should you choose?
Build agents with code, orchestration, memory, and evaluation libraries. Start with a real task and compare the output, effort, permissions, and full cost. Check licensing, maintenance status, supported providers, and hosting or inference costs. Validate claims with the vendor and test the important workflow with your team. Differences shown here are evaluation prompts, not hands-on performance findings.
Mastra: the evaluation focus
TypeScript framework for agents, workflows, memory, and evaluation. Check licensing, maintenance status, supported providers, and hosting or inference costs.
Read the Mastra profileOutlines: the evaluation focus
Generate structured outputs from language models with schema constraints. Check licensing, provider compatibility, maintenance, and tool permissions. Test failure recovery before enabling agent actions.
Read the Outlines profile