Side by side
ChainForge vs Laminar
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.
ChainForge supports structured prompt experiments with comparison, scoring, and plotting features. Choose between the limited web version and local installation based on the features and key-handling workflow you need.
Visit ChainForge
Choose Laminar if you need OpenTelemetry-native tracing and debugging for AI agents, with evaluations and cloud or self-hosted deployment options. The Free plan has one project, one seat, 1 GB of data, and 7-day retention; teams needing more data or longer retention can consider the paid plans, starting at $30/mo.
Visit LaminarThe facts
| ChainForge | Laminar | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Self-hosted, Web | API, Self-hosted, Web |
| Lowest paid plan | Free or on request | Starter: $30 a month |
| Plans published | 1 | 4 |
| Maker | Not published | Not published |
| Website | chainforge.ai | laminar.sh |
| On prompt engineering tools | #11 of 25 | #15 of 25 |
ChainForge: what it does well
- Compares multiple models and prompt variations.
- Supports code-based and LLM-based response scoring.
- Imports JSONL, XLSX, and CSV files.
- Offers web and self-hosted options.
What to know first
- Web version has a limited feature set.
- Web users must set API keys each time they load it.
- Forgetting an encryption password prevents access to saved flows or settings.
- Beta supports only Chrome, Firefox, Edge, and Brave.
Laminar: what it does well
- Traces LLM calls, tools, custom functions, and sub-agents.
- Readable transcripts help inspect agent runs.
- Cached replay supports debugging up to a point under investigation.
- Evaluations can run locally or in CI.
- Offers managed cloud and self-hosting.
What to know first
- Free includes 1 GB of data and 7-day retention.
- Free is limited to 1 project and 1 seat.
- Free and Starter default Privacy Mode to off.
- PII redaction is best-effort and applies to model input and output.
Alternatives to ChainForge Alternatives to Laminar The whole list