Orchestrate. Evaluate. Scale
The command center for agentic workflows. Replace 'vibe-checks'" with rigorous engineering using cross-model benchmarking, versioned logic, and production-ready infrastructure for OpenAI, Gemini, and Claude
Built for serious prompt workflows
One workspace—design, evaluate, and ship without guesswork.
Prompt design & testing
Structured prompts, version history, and runs across OpenAI, Gemini, and Claude.
Datasets & evaluation
Upload CSVs, benchmark versions, and compare before production.
Widgets & deployment
Turn approved prompts into embeddable chat with a short script.
Digital Assembly Lines
Draft → evaluate → deploy
The Agentic SDR
How a sales team versions outreach prompts.
The Automated Auditor
How a legal team runs datasets to check for compliance.
The Support Specialist
Using the Chat Widget for self-healing customer service.
Observability & Runtime Insights
Monitor and analyze the performance of your LLM applications.
Three LLM providers
Same prompt, comparable runs—pick the model that fits
OpenAI
Google Gemini
Anthropic Claude
Why teams standardize on FuelR
Multi-provider testing
Compare outputs and latency across OpenAI, Gemini, and Claude.
Dataset-backed releases
Promote versions with evidence—not only gut feel.
Production widgets
Ship chat without rebuilding core infrastructure.
Production widgets
Ship chat without rebuilding core infrastructure.
Zero Vendor Lock-in
Switch providers in 10 seconds. Your infrastructure stays the same.
LLM as Judge
Coming Soon
Integration APIs
Bring prompts & evaluations into your stack
Stable HTTP contracts for internal tools and pipelines—with scoped keys and full revoke/rotate support.
Prompt version pull
Fetch metadata and history from a versioned public API surface.
Scoped API keys
Read-only integration keys with lifecycle controls your security team expects.
Evaluation payloads
Pull runs and per-item results to power custom QA dashboards.
Frequently asked questions
Straight answers about how FuelR fits your workflow
Which LLM providers are supported?
OpenAI, Google Gemini, and Anthropic Claude—so you can compare behavior and cost before standardizing.
Can we evaluate prompt versions with datasets?
Yes. Upload CSVs, run evaluations against specific versions, and review quality and spend before rollout.
How do chat widgets ship to production?
After validation, generate a widget and embed it with a short script—no rewrites to your core app.
Is there a free tier?
You can start with core prompt workflows and expand into advanced evaluation and deployment as usage grows.
How are API keys stored?
Keys are encrypted at rest and only decrypted for outbound provider calls. Workspace data stays under your control.
Stop Vibe-Checking. Start Engineering
Join teams using FuelR to design prompts, run evaluations, and launch widgets—with logs and APIs that match how you already work.
No credit card required · Start in minutes