Promptitude lets teams test, manage, and improve prompts for integrating GPT into apps and workflows.
Promptmetheus
Compose, test, and optimize prompts for language-model applications in Promptmetheus, an IDE supporting more than 100 models.
About Promptmetheus
Promptmetheus is a prompt engineering IDE for composing, testing and optimizing prompts for LLM-powered applications, agents and workflows. It supports structured prompts from text and data blocks, testing with 150+ models from 15 built-in providers or user-configured OpenAI-compatible models, datasets for dynamic context, custom automatic evaluators, versioning with changelogs, and cost estimation.
Use requires a screen 12 inches or larger. Subscriptions do not include inference budget, so users must provide their own API keys.
Key features
- Compose structured prompts from text and data blocks with variants
- Test prompts across 150+ models with adjustable parameters
- Configure custom evaluators to validate completions automatically
- Organize inputs into datasets for injection via data blocks
- Track prompt changes with versioning and changelogs
- Export prompts and completions as txt, csv, xlsx or json
Best for: Developers and teams building LLM-powered apps, agents and workflows who need to compose and test prompts.
Good for
- Works with 150+ models from 15 providers plus custom OpenAI-compatible models
- Combines datasets, variables, evaluators, versioning and cost calculation
- Exports prompts and completions in txt, csv, xlsx and json formats
Watch out for
- Requires a screen 12 inches or larger
- Requires users to supply their own API keys for model inference
Promptmetheus at a glance
- Website
- promptmetheus.com
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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