Your prompt
mission control.
Test, iterate, and compare prompts across every model you care about — from OpenAI and Anthropic to your own fine-tuned locals. No subscriptions. No lock-in.
Test, iterate, and compare prompts across every model you care about — from OpenAI and Anthropic to your own fine-tuned locals. No subscriptions. No lock-in.
Works with every model
Built for developers who treat prompts like code — with the tools to match.
Run the same prompt across multiple models simultaneously. See outputs side by side and know exactly which model is right for the job.
Every iteration is tracked. Diff any two versions side by side. Know exactly what you changed and when your prompt started performing.
Build reusable prompt templates with variables. Slot in different values without rewriting. Keeps your workspace clean and your prompts maintainable.
Upload a CSV and run your prompt against every row at once. Test edge cases at scale before they hit production. No scripting required.
Ask Orion to improve your prompt using the model of your choice. A second opinion from the exact system you’re prompting. Genuinely useful, not gimmicky.
Collections export to clean JSON. Commit prompt changes like code, review them in PRs, and share with your team using the workflow you already have.
Add your API keys. Orion connects directly — nothing passes through our servers. OpenAI, Anthropic, local, or any compatible endpoint.
Write prompts with variables, organize them into collections, and iterate quickly. Create new versions you can return to.
Run batch jobs from a CSV, compare outputs across models side by side, and use version diffs to understand what’s improving.
Export your finalized prompts to JSON and bring them into your codebase. Your prompt history travels with you.
Pay once, use forever. You own your tool. No metered usage, no surprise bills — you’re using your own API keys.
Some teams can’t allow outbound network calls. Orion Crew supports air-gapped license activation — no phone-home, no server dependency, just a signed license file you import once.
Download free, no account needed. Start testing prompts in under two minutes.