Mem0 vs promptfoo
Side-by-side comparison built from DeepYard's structured catalog. Content updated Aug 21, 2026.
Direct Answer
Mem0 suits teams needing freemium $49/mo, memory focus, and 63,787 GitHub stars in current listing data. promptfoo suits teams needing open-source access, evaluation focus, and 24,450 GitHub stars in current listing data. This summary reflects catalog metadata only for decision support, not independent testing.
What this comparison weighs
- Pricing and free-tier availability
- License model and deployment fit
- GitHub adoption and contributor depth
- Catalog tags, integrations, and supported workflows
| Metric | Mem0 | promptfoo |
|---|---|---|
| GitHub Stars | 63.8K | 24.4K |
| Contributors | 393 | 318 |
| Last Commit | Aug 21, 2026 | Aug 21, 2026 |
| Open Issues | 683 | 515 |
| License | open-source | open-source |
| Pricing | freemium | open-source |
| Free Tier | Yes | Yes |
| Category | dev-tools | dev-tools |
| Trending | No | No |
Choose Mem0 if you need
- • Mem0 stands out for Memory workflows that are not listed for promptfoo.
- • Mem0 is the stronger pick when Langchain matters because that capability is listed only on its profile.
- • Mem0 shows broader GitHub adoption with 63,787 stars versus 24,450 for promptfoo.
Choose promptfoo if you need
- • promptfoo stands out for Evaluation workflows that are not listed for Mem0.
- • promptfoo is the stronger pick when Gemini matters because that capability is listed only on its profile.
- • promptfoo is the cleaner fit if you specifically need Evaluation workflows from the catalog tags.
Meaningful differences
- • Pricing model: Mem0 is listed as freemium from $49/mo, while promptfoo is listed as open-source.
- • Workflow emphasis: Mem0 highlights Memory, while promptfoo highlights Evaluation.
- • GitHub adoption: Mem0 shows 63,787 stars versus 24,450 for promptfoo.
- • Contributor count: Mem0 lists 393 contributors and promptfoo lists 318.
Shared capabilities
- • Open Source
- • Openai
- • Anthropic
Shared Tags
Only in Mem0
Only in promptfoo
Limitations and evidence
- • DeepYard compares structured public metadata; this is not an independent benchmark unless a test record is shown.
- • Signals such as stars, contributors, and last commit indicate public activity, not purchase fit or runtime quality.
- • Pricing and feature coverage reflect the stored listing snapshot and may lag vendor changes between refreshes.
About Mem0
Mem0 provides a managed memory layer that gives AI agents and chatbots the ability to remember user preferences, past interactions, and contextual facts across sessions. It automatically extracts and stores relevant memories from conversations, retrieves them at inference time via semantic search, and handles forgetting of stale information. Compatible with any LLM and easy to self-host, Mem0 is the most widely adopted open-source memory solution for AI applications.
View full listingAbout promptfoo
promptfoo is an open-source tool for testing, evaluating, and red-teaming LLM applications. Run automated evaluations across multiple models and prompts, compare outputs side-by-side, detect regressions, and test for security vulnerabilities. Supports custom assertions, CI/CD integration, and model-graded evaluations.
View full listing