claude-opus-4-8
claude-opus-4-8 · max, showing backend engineering. Results for all tested efforts are available below.
Backend engineering64
claude-opus-4-8 · max
- Backend engineering
- 64
- Frontend interaction
- 88
- Knowledge & Reasoning
- 85
- Visual aesthetics
- 68
- Maintainability
- 55
- Evaluation time
- 63m 16s
- Reference cost
- $8.37
Backend engineering · Evaluation time & API cost
Backend tested · 9/10/2026Tasks & 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 |
|---|---|---|---|---|---|---|---|---|---|
| 65.65 | 48 | 72 | 75 | 66 | 55 | 84m 26s | $4.40 | ||
| 76.80 | 61 | 87 | 90 | 68 | 55 | 102m 10s | $9.18 | ||
| 75.85 | 64 | 88 | 85 | 68 | 55 | 106m 52s | $16.33 |
Score breakdown
- Overall score
- 75.85
- Evaluation time
- 106m 52s
- Reference cost
- $16.33
Service logic, error handling, and test verification.
Contracts and boundaries7 / 20
API contracts, input validation, and boundary behavior.
Retries and failures15 / 20
Error recovery, retry conditions, and failure handling.
CI and adversarial review13 / 20
Verification plans, risk detection, and audit evidence.
Transactions and consistency13 / 20
State transitions, concurrency control, and data consistency.
Caching and regression16 / 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
- +3.0 pts 61.00 → 64.00
- Reference cost
- +$4.45 $3.92 → $8.37
- Evaluation time
- +84.6% 34m 16s → 63m 16s
Data snapshot published · 10/27/2026Scoring & cost notes