Side by side
Maxim AI vs Vellum
Both stand on ai prompt management software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APISelf-hostedWeb
Maxim AI brings prompt work, agent evaluation, and production observability into one platform. Its free plan has limits on seats, workspace count, logs, and retention; enterprise deployment and controls are listed separately.
Visit Maxim AI Free plan Open source AndroidAPIExtension+5
Vellum offers a personal assistant with saved context, skills, integrations and approval controls. Consider its internet requirement and default AI data routing, and note the available Linux access options if you use Linux.
Visit VellumThe facts
| Maxim AI | Vellum | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | API, Self-hosted, Web | Android, API, Extension, iPhone, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Professional: $29 per seat a month | Mighty: $30 a month |
| Plans published | 4 | 6 |
| Maker | Not published | Not published |
| Website | getmaxim.ai | vellum.ai |
| On ai prompt management software | #8 of 25 | #4 of 25 |
Maxim AI: what it does well
- Supports custom metrics and human evaluators.
- Includes production traces and regression alerts.
- No-code evaluation workflow is available.
- SDKs cover Python, TypeScript, Java, and Go.
- Enterprise offers VPC deployment and data isolation.
What to know first
- Developer plan has three-day data retention.
- Developer plan is limited to three seats.
- Professional costs $29 a month per seat.
Vellum: what it does well
- Saves preferences and context across conversations.
- Users can create and manage custom skills.
- Sensitive actions can require approval.
- Cloud assistants run in isolated environments with private storage.
- Optional analytics and crash diagnostics are off by default.
What to know first
- Requires an internet connection to reach an AI provider.
- No shipped Linux desktop client.
- Conversation context goes to Anthropic by default.
- Paid plans start at $30/month.
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