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Reliability and durable execution
Agent success rate compounding calculator
See how a small failure rate per step compounds over a long agent run, and how retries change the odds
Result
Runs that finish
35.8%
- Failed runs per 100
- 64.2
- Step success with retries
- 95%
- Most steps that still reach 90%
- 2
How it is calculated
With retries, a step succeeds with 1 − (1 − p)^(retries + 1). A run succeeds only if every step does: step success^steps. The longest run that still reaches 90% is ln(0.9) / ln(step success).
Keep in mind
This assumes steps fail independently. In practice failures often cluster, for example when an API is down, which makes retries less effective.
Related service
Agent platform consultancy