Prompt operations for teams shipping on OpenAI, Gemini & Claude
We help you design prompts, run dataset evaluations, and deploy widgets—without losing history or visibility into production behavior.
Most teams juggle spreadsheets, one-off API calls, and unclear ownership. FuelR is the single place for versions, evals, and rollout—with only the three providers you need today.
3
LLM providers
1
workspace
∞
prompt versions
Mission
Make AI reasoning repeatable: same prompt surface, comparable runs across OpenAI, Google Gemini, and Anthropic Claude, and a clear path from evaluation to embedded widgets.
Focus
Prompt lifecycle end-to-end—not generic MLOps.
Clarity
Evidence from datasets before you promote a version.
Teams
Built with operators who ship features, not slides.
Vision
AI shipping should feel as routine as shipping code: branch prompts, run evals, diff providers, deploy widgets—with logs you can trust.
Speed
From draft prompt to widget embed without rebuilding your stack.
Reliability
Promote versions backed by dataset results, not anecdotes.
Access
One UI for OpenAI, Gemini, and Claude—no tab sprawl.
Developer first — ergonomics over checkbox features.
Simplicity — complex workflows feel guided, not crowded.
Transparency — clear scopes, keys, and data handling.
Security — encryption in transit and at rest for secrets.
Built by operators
We have shipped LLM-backed products and felt the same friction. FuelR is the tool we wanted: versioning, evals, three providers, and production widgets in one place.
Start with FuelR
Design prompts, benchmark on datasets, and ship widgets—aligned on OpenAI, Gemini, and Claude.
No credit card required