Launching today
EmberLM
Test, compare, and ship LLM prompts without guessing.
1 follower
Test, compare, and ship LLM prompts without guessing.
1 follower
EmberLM is a developer workspace for prompt engineering. Compare outputs across Claude, GPT-5, and Gemini side by side. Define eval rules to know when a response is good enough. Run regression tests to catch quality drops before production. Debug MCP servers with a visual inspector. Track cost per model, per prompt. When you're ready, deploy prompts to production with a one-line SDK and update them without redeploying your app. Postman for the AI era.
Glassbrain
Hey Product Hunt! I'm Sai, founder of EmberLM.
I was tired of the prompt development loop every AI developer knows: tweak a prompt, paste it into ChatGPT, paste it into Claude, eyeball the outputs, push to production, and hope nothing breaks.
EmberLM replaces that with a real workspace. Run the same prompt across 9 models side by side and see cost, latency, and quality compared instantly. Set eval rules so "good enough" is a number, not a feeling. Run regressions against golden datasets when you change a prompt. When it's ready, tag it as prod and fetch it in your app with one line of code.
The MCP debugger has been a surprise favorite. Paste a server URL, see every tool, test them, and inspect the full JSON-RPC traffic.
Free tier gives you 25 calls to try everything. Would love your feedback.