claude-opus-5-5
claude-opus-5-5 · max, showing backend engineering. Results for all tested efforts are available below.
Backend engineering84
claude-opus-5-5 · max
- Backend engineering
- 84
- Frontend interaction
- 97
- Knowledge & Reasoning
- 100
- Visual aesthetics
- 73
- Maintainability
- 70
- Evaluation time
- 9m 29s
- Reference cost
- $1.05
Backend engineering · Evaluation time & API cost
Backend tested · 9/23/2026Tasks & methodology
Results by reasoning effort
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| Model / effort | Overall | Backend engineering | Frontend interaction | Knowledge & Reasoning | Visual aesthetics | Maintainability | Total eval. time | Total ref. cost | Compare |
|---|---|---|---|---|---|---|---|---|---|
| 85.55 | 84 | 87 | 95 | 78 | 64 | 61m 15s | $6.29 | ||
| 89.15 | 84 | 97 | 100 | 73 | 70 | 66m 3s | $13.41 |
Score breakdown
- Overall score
- 89.15
- Evaluation time
- 66m 3s
- Reference cost
- $13.41
Service logic, error handling, and test verification.
Contracts and boundaries18 / 20
API contracts, input validation, and boundary behavior.
Retries and failures16 / 20
Error recovery, retry conditions, and failure handling.
CI and adversarial review16 / 20
Verification plans, risk detection, and audit evidence.
Transactions and consistency16 / 20
State transitions, concurrency control, and data consistency.
Caching and regression18 / 20
Cache invalidation, data updates, and regression coverage.
What changes with higher reasoning effort
Compare backend engineering scores, cost, and time across neighboring tested efforts.
xhigh max
- Backend engineering
- 0.0 pts 84.00 → 84.00
- Reference cost
- −$0.079 $1.13 → $1.05
- Evaluation time
- −5.9% 10m 4s → 9m 29s
Model and effort comparisons
Data snapshot published · 10/27/2026Scoring & cost notes