25%
candidate, 75% source control
Session rollout: running at 25% candidate.
Cohorts are monotonic. Lower buckets stay on the candidate as traffic increases.
Target verification
0%
Canary
5%
Progressive
10%
Progressive
25%
Progressive
50%
Progressive
95%
Complete
100%
Eligible assignments
100
100 outcomes
Telemetry complete
100.0%
Policy age p95: 52,800 ms. Enforcement overhead p95: 10 ms.
Treatment recovered
1
0 unrecovered failures
Stable-key assignments
100.0%
Stable cohorts observed.
| Arm | Assigned | Attempted | Succeeded | Failed | Recovered | Error rate | p50 latency | p95 latency | Actual spend |
|---|---|---|---|---|---|---|---|---|---|
| Candidate (claude-haiku-4-5) | 25 | 25 | 24 | 0 | 1 | 4.0% | 624 ms | 750 ms | $0.20954 |
| Source control (claude-sonnet-4-6) | 75 | 75 | 74 | 1 | 0 | 1.3% | 1,396 ms | 1,582 ms | $2.1443 |
Actual rollout spend
$2.3538
Source control $2.1443, candidate $0.18102, source fallback $0.028518
Estimated source baseline
$0.70966
95% interval: $0.7021 to $0.71721
Estimated avoided spend
$0.50012
Control-normalized estimate, not exact savings
Evaluation spend
$0
Rollout quality refreshes
Stage duration
Hold this stage for at least 60 minutes.
Treatment samples
Collect at least 20 treatment outcomes.
Control samples
Collect at least 20 control outcomes.
Telemetry completeness
Wait for correlated post-call outcomes before promotion.
Policy freshness
At least 95% of rollout assignments must use policy no older than two minutes.
Error regression
Candidate failure and recovery rate must remain within the configured control delta.
Latency regression
Candidate p95 latency must remain within the configured control delta.
Cost regression
Candidate average request cost must remain within the configured control delta.
Quality evidence
Use current green experiment evidence for this exact source and candidate pair.
Replay budget
Keep replay budget available for refreshed quality evidence.
Provider compatibility
Source and candidate must use the same supported provider path.
Evaluation budget
Rollout quality refreshes must remain within the disclosed evaluation budget.
Promoted
0% to 25% candidate, revision 2.
Created
Started to 0% candidate, revision 1.