Know your agents real cost
One-line proxy that attributes every LLM call to the agent, task, or feature that made it. No SDK changes. No extra config.
No credit card · No API key stored · One line of code
Total Spend
$1,247
Savings
$834 (67%)
Zombie Agents
2
AIcostsareinvisibleuntiltheydestroyyourrunway.
You get one monthly invoice. You have no idea which agent, workflow, or runaway loop caused half of it. By the time you notice, it's already expensive.
Works with every framework your team uses
Three steps to full cost clarity.
Point your SDK at Kostly
Change one line. Your existing code keeps working — every call now flows through the proxy.
Tag calls with context
Pass agent and task metadata in headers. Kostly attributes costs automatically.
Read the dashboard
See cost by agent, model efficiency, zombie alerts, and savings — in real time.
See Kostly in action.
Watch a multi-agent workflow run with and without Kostly optimization.
Total Spend
$1,247.83
Avg Cost/Task
$0.43
Savings
$0.00
Zombie Agents
2
Cost Over Time
Cost by Model
Agent Performance
| Agent | Tasks | Success Rate | Avg Cost/Task | Total Cost | Status |
|---|---|---|---|---|---|
Researcher | 312 | 94% | $0.12 | $37.44 | Healthy |
Writer | 287 | 91% | $0.08 | $22.96 | Healthy |
Reviewer | 198 | 40% | $0.45 | $89.10 | Zombie |
Summarizer | 445 | 97% | $0.03 | $13.35 | Healthy |
QA Agent | 156 | 38% | $0.52 | $81.12 | Zombie |
Free to start. Pay only on savings.
Free
$0 / forever
- ✓ Unlimited API calls proxied
- ✓ Cost dashboard + live feed
- ✓ Agent attribution + tagging
- ✓ Zombie detection
- ✓ Model breakdown
Smart Router
10–15% of savings
We only charge when we save you money.
- ✓ Everything in Free
- ✓ Automatic model downgrade suggestions
- ✓ One-click routing rules
- ✓ Savings audit trail
- ✓ Priority support
Stop guessing. Start knowing.
Get your first cost breakdown in under two minutes.
Start tracking free →