Don't gamble with your cloud costs. Use Spare Cores!

Run every ML workflow faster and cheaper—no config wrangling required.

Resource Tracker watches your Metaflow runs, learns real CPU / RAM / GPU needs, and recommends the right instance for the next run.

PRICE/HOURS
CPU
RAM (GB)
<why use="spare_cores">
Trusted by early adopters tracking and optimizing hundreds of Metaflow steps every day.
Every under‑utilized core is budget you could spend on the next experiment.
Track
<resource_tracker>
The Spare Cores Resource Tracker provides per-step CPU/GPU/RAM straight from your Metaflow runs, and recommends the right instance for your next run.
Know
<navigator>
The Spare Cores Navigator benchmarks 2,000+ instance types across clouds and recommends the best fit.
Do
<sentinel>
The Spare Cores Sentinel Access and Sentinel Pro (coming soon) add dashboards, richer reporting, alerts & within or cross‑cloud auto‑tune.
Built for bursty DS/ML pipelines—not 24 × 7 web traffic.
<product id="resource_tracker">
For ML Engineers & Data Scientists
No more tedious config tweaking.
@track_resources decorator → report and sizing advice.
Open‑source, MPL‑licensed—full control, no vendor lock‑in.
Metaflow today—other orchestration tools on the roadmap.
Get started now, or book a 30‑min live call to share your requirements or feedback with us.
<product id="sentinel">
For Data‑Science & FinOp Leads
Your team is wasting time and money. See where every cloud dollar goes—then reclaim it without slowing the team.
Sentinel Access
(Join the wait-list for Sentinel Access)
360-view of every job you run in a central dashboard
Feature-rich reports, 7-day retention
Auto-tuning resource allocations
Proactive alerts (over-provision, drift, anomalies)
Free cloud service for individual users
Sentinel Pro
(Coming soon)
Everything in Sentinel Access, plus team support
Hierarchical or tag-based report breakouts
Full historical optimization and savings analysis
Central management (e.g. max GPU hours per project)
Custom data retention, SLA, SSO & RBAC
Optional on-prem or hybrid deployment
<init products="resource_tracker sentinel">
Ready to right‑size your workflows?
  1. Install the open-source Resource Tracker package
  2. Sign up for early access to a free Sentinel Access account to see 7‑day workflow history
  3. Book a 30‑min live call to share your pain points and preview Sentinel Access and Pro

              from resource_tracker import ResourceTracker

              # start trackers in the background (non-blocking)
              tracker = ResourceTracker()

              # your compute-heavy task
              train_model_or_render_video()

              # view a resource usage report at any time
              tracker.report()
              # or get resource allocation advice for future runs
              tracker.suggest()
<services from="spare_cores">
More ways Spare Cores helps
Spare Cores Navigator
Real‑time benchmarks for 2 000 + AWS, GCP, Azure & Hetzner instance types—LLM, DB, compression and more.
Cloud‑Optimization Consulting
Custom benchmarks, spend audits, and right‑sizing plans that unlock another 10–20 % savings.
Scalable Shiny / Streamlit Hosting
Monitoring and auto‑scaling containerized dashboards from zero to thousands of users on your cloud—or ours.
Ad-hoc AI Workload Sizing
Instantly pick the lowest-cost, right-sized infra for one-off tasks—like labeling 10 k PDFs with an LLM.
<
release_notes
>
We publish case studies, learnings from implementing Spare Cores components, and other project updates from time to time. Find some of our featured articles below: