Pass rate
Tasks solved / tasks in scope, up to 2 attempts (strict per-set denominator).
Formula: (tasks_passed_attempt_1 + tasks_passed_attempt_2_only) / task_set_size
Includes unattempted tasks as failures. Scope-aware; reflects active filters (set, category, difficulty). Final assisted solve rate with up to 2 attempts; drill-down companion to Solve AUC@2.
Avg cost / task
Average LLM cost per distinct benchmark task in USD.
Formula: SUM(cost_usd) / COUNT(DISTINCT task_id) across all the model's results in scope.
Use to compare operating cost across models with similar pass rates. Does not account for quality. Combine with $/Pass for a cost-efficiency view.
Latency p50
Median per-task wall time (LLM call + compile + test), in milliseconds.
Formula: 50th percentile of per-task duration_ms: LLM latency + compile time + test time.
Use p50 for a typical-case latency expectation. Unaffected by outlier slow tasks.
Avg attempt score
Mean per-attempt score on a 0–100 point scale (partial credit). Drill-down only.
Formula: Mean of attempt scores across all results rows: SUM(score) / COUNT(*) over the results table. Each attempt earns 0–100 points based on compile + test outcomes.
Drill-down companion to pass_at_n. Rewards partial credit but not directly comparable to pass rate; use for within-model analysis.
All-runs pass rate
Fraction of tasks the model solved in every single run (strict consistency, also written pass^n).
Formula: tasks where ALL runs produced a passing result / tasks_attempted_distinct
Measures reliability under repetition. High value means the model is unlikely to regress on a re-run, important for CI and production use. Formal name in the literature: pass^n.
$/Pass
Average USD cost per solved task (any-attempt pass).
Formula: SUM(cost_usd) / tasks_passed_distinct across all runs.
Best single cost-efficiency metric. Penalises expensive models that pass few tasks and rewards cheap models with high pass rates.
Latency p95
95th-percentile per-task wall time. Captures tail latency.
Formula: 95th percentile of per-task duration_ms across all tasks in all runs.
Use p95 to understand worst-case latency. A low p95 means the model rarely stalls, relevant for automated pipelines with timeouts.
Overview
Claude Opus 4.6 has run on 3 occasions, attempting 110 tasks with an average score of 70.6 / 100.
Settings
Generation parameters used across this model's runs. "varies" indicates the value differed between runs.
- Temperature
- varies
- Thinking budget
- varies
- Avg tokens / run (input + output)
- 269,223
- Consistency
- 91.8%
History
Cost
Failure modes
- AL0104 319 Syntax error, '=' expected view all →
- AL0000 112 App generation failed view all →
- AL0111 97 Semicolon expected. Add a semicolon (;) to terminate the statement. view all →
- AL0224 60 Expression expected. Provide a valid expression (variable, constant, calculation, or method call). view all →
- AL0107 54 Syntax error, identifier expected. Provide a valid name (letters, digits, and underscores only). view all →
- AL0198 54 Expected one of the application object keywords (table, tableextension, page, pageextension, pagecustomization, profile, profileextension, codeunit, report, reportextension, xmlport, query, controladdin, dotnet, enum, enumextension, interface, permissionset, permissionsetextension, entitlement) view all →
- AL0105 39 Syntax error, identifier expected; 'key' is a keyword view all →
- AL0132 16 'FieldRef' does not contain a definition for 'CreateInStream' view all →
- AL0185 16 Page '0' is missing view all →
- AL0110 14 Orphaned ELSE statement. This is most likely because of an unnecessary semicolon placed just before the ELSE keyword view all →
Shortcomings
AL concepts Claude Opus 4.6 struggles with. Click a row for description, correct pattern, and observed error codes.
Shortcomings analysis queued
Queued for analysis. This section will populate once the run is processed.
Recent runs
| Started | Run | Model | Tasks | Score | Cost | Duration | Status |
|---|---|---|---|---|---|---|---|
| 1mo ago | c611fa66-e0e… | 96/110 | 72.3 / 100 | $3.87 | 1h 56m | completed | |
| 1mo ago | 7a0dcd0a-b8a… | 91/110 | 68.8 / 100 | $4.29 | 1h 34m | completed | |
| 1mo ago | f14a129e-666… | 93/110 | 70.8 / 100 | $4.16 | 1h 34m | completed |
Methodology
Pass rate counts unattempted tasks as failures (strict denominator). Avg score is the mean of every attempt the model produced — failed first tries that triggered a retry contribute one observation each, pulling the mean down. See the about page for the full breakdown and unit conventions.