Side by side
PromptLayer vs PromptTools
Both stand on prompt engineering tools. 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
PromptLayer brings prompt editing, evaluation, and operational monitoring into one workflow, with collaboration features for technical and non-technical contributors. The Free plan has defined prompt and playground limits, while larger teams can consider paid plans or Enterprise hosting options.
Visit PromptLayer Free plan
Visit PromptTools The facts
| PromptLayer | PromptTools | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Self-hosted, Web | Not published |
| Lowest paid plan | Pro: $49 a month | Not published |
| Plans published | 4 | None |
| Maker | Not published | Not published |
| Website | promptlayer.com | prompttools.ai |
| On prompt engineering tools | #18 of 25 | #22 of 25 |
PromptLayer: what it does well
- Edit and deploy prompts without an application redeploy.
- Evaluations include historical backtests and model comparisons.
- Tracks cost, latency, token use, scores, and traces.
- Enterprise supports flexible hosting options.
- Free plan includes 5 users and 2.5k monthly requests.
What to know first
- Free includes only 10 prompts and 10 daily playground runs.
- Webhooks are limited to Team and Enterprise.
- Pro costs $49 a month.
- Team costs $500 a month.
PromptTools: what it does well
Alternatives to PromptLayer Alternatives to PromptTools The whole list