From idea to live prompt in seconds
Make your prompts better and prove it.
Edit the prompt or swap the model, and it's live on the next call — no redeploy, no code change. Then A/B test it on real traffic, so you know the new version actually performs better. Your prompts stay versioned in your repo. From $9/month.
Open-source CLI + SDKs · your prompts stay in your repo · the SDK never throws.
From public complaint to shipped fix
Instant publish
Fix a prompt in seconds, not in your next release.
The problem
“Changing prompts requires code changes and redeployment, making iteration and experimentation difficult.”
GitHub issue The PromptFlip solution
customer-support-replyv3openai/gpt-4o-miniPublishPromptInputsMetricsLogs1You are a support agent for {{company_name}}.2Always respond in a friendlyconcise tone.Live in production · 0.4sVersioning
See which prompt version made things better — or worse.
The problem
“Someone tweaks the prompt, someone else changes the model and a few days later the workflow starts behaving differently. Half the investigation is just figuring out what changed.”
Reddit The PromptFlip solution
Resolvedresolved85%avg of 1,248 samples80%60%v2v3v1v2v3A/B testing
Stop shipping prompt changes without proof they're better.
The problem
“Developers and product teams cannot safely iterate on system prompts, knowledge updates, or tool configs without risking the live experience for all users simultaneously. There is no mechanism to run controlled experiments.”
GitHub issue The PromptFlip solution
customer-support-replytest running- A
“Always respond in a friendly tone.”
50% of traffic71% resolved
- B
“Always respond in a warm, concise tone.”
50% of trafficwinner88% resolved
Promote B
Explore