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Qwen3.5 122b A10b [Q4_K_XL]
LM Studio
262K context<$0.01/M input<$0.01/M output
1541
Avg Score
70.9
Avg Cost
$0.24
Score/$
300.5
Runs
103
Win/Loss/Draw
Scoring Dimensions
Score Distribution
Category ELOs
multi-languageexpert
2183frontendeasy
2081multi-languagehard
2003debuggingexpert
1770full-stackhard
1767from-scratchexpert
1758backendhard
1701debuggingmedium
1684full-stack
1673backendexpert
1651multi-language
1633refactoringmedium
1611refactoring
1599debugging
1596full-stackmedium
1585backend
1574frontendhard
1562frontendmedium
1526frontend
1510debugginghard
1510from-scratcheasy
1492backendmedium
1472code-reviewmedium
1393from-scratch
1311frontendexpert
1310code-review
1289refactoringexpert
1275from-scratchmedium
1263from-scratchhard
1145code-reviewhard
809backendeasy
502All Results
| Task | Category | Score |
|---|---|---|
| Migrate callback-hell Express app to async/await | refactoring | 75.8 |
| Build production website with auth and members area | frontend | 47.9 |
| Build SaaS admin dashboard from scratch | from-scratch | 37.0 |
| Fix broken responsive layout | frontend | 79.7 |
| Add GraphQL layer over REST API | multi-language | 81.8 |
| Fix race conditions in order matching engine | backend | 84.8 |
| Fix 12 WCAG accessibility violations in checkout form | frontend | 80.1 |
| Implement multi-tenant row-level security in Postgres | backend | 42.0 |
| Fix broken GitHub Actions CI pipeline | debugging | 84.1 |
| Debug and fix 6 broken database triggers and constraints | debugging | 90.7 |
| Add cursor-based pagination to REST API | backend | 82.8 |
| Add caching layer to eliminate slow SSR page loads | full-stack | 80.5 |
| Harden insecure Docker setup with 12 vulnerabilities | code-review | 78.5 |
| Convert React app to PWA with offline support | frontend | 69.6 |
| Fix auth bypass vulnerability | debugging | 84.8 |
| Find and fix 4 hidden backdoors in Flask app | debugging | 89.5 |
| Write tests for untested legacy Flask service | code-review | 49.2 |
| Write complex SQL report with window functions | backend | 62.0 |
| Implement zero-trust API authentication layer | backend | 69.7 |
| Add Google OAuth2 login to Express app | full-stack | 84.6 |
| Build CLI tool with subcommands and config | from-scratch | 48.8 |
| Implement Stripe webhook handler | backend | 82.0 |
| Implement JWT auth middleware | backend | 51.9 |
| Replace console.log with structured logging | refactoring | 47.7 |
| Refactor monolithic handler to CQRS | refactoring | 73.7 |
| Add virtual scrolling to table rendering 5000 rows | frontend | 82.8 |
| Build terminal UI dashboard | from-scratch | 52.0 |
| Fix Node.js stream backpressure causing OOM on large files | backend | 86.3 |
| Add retry logic and dead letter queue to Python task queue | backend | 62.0 |
| Fix N+1 query in dashboard | backend | 52.9 |
| Fix hallucination and context window bugs in RAG agent | backend | 57.2 |
| Build REST API from scratch | from-scratch | 56.3 |
| Fix data integrity bugs in denormalized e-commerce schema | debugging | 92.8 |
| Build materialized view refresh pipeline for analytics | backend | 87.8 |
| Port Python CLI to Rust | multi-language | 46.8 |
| Remove AI slop and over-engineering from codebase | refactoring | 95.3 |
| Add slash commands and moderation to Discord bot | backend | 84.1 |
| Write Kubernetes manifests for Node.js microservice | full-stack | 85.0 |
| Debug race condition in worker pool | debugging | 90.9 |
| Add Redis caching layer to Express API | backend | 82.7 |
| Build distributed node cluster with gossip protocol | from-scratch | 44.4 |
| Build LLM evaluation harness with structured grading | backend | 84.0 |
| Add file upload with S3 presigned URLs | backend | 74.1 |
| Fix React hydration mismatch | frontend | 79.3 |
| Write integration tests for payment flow | code-review | 67.4 |
| Split 1100-line god file into proper modules | refactoring | 49.3 |
| Build MCP server for database management | backend | 74.5 |
| Add i18n with locale routing to Next.js app | full-stack | 80.9 |
| Fix memory leak in event handler | debugging | 76.0 |
| Code review: identify security vulns | code-review | 66.5 |
| Build real-time portfolio risk calculator | backend | 53.9 |
| Build codebase indexer for LLM context windows | from-scratch | 37.1 |
| Implement background job scheduler with persistence | backend | 52.5 |
| Implement transformer inference engine with KV cache | from-scratch | 80.9 |
| Add rate limiting middleware | backend | 47.4 |
| Find and patch all OWASP Top 10 vulnerabilities | debugging | 70.7 |
| Optimize bloated React bundle under 500KB | frontend | 80.8 |
| Add WebSocket real-time updates | full-stack | 81.8 |
| Fix flaky test suite | debugging | 85.0 |
| Optimize slow Postgres queries in Flask app | backend | 76.0 |
| Add streaming SSE endpoint for LLM chat | backend | 84.6 |
| Fix deadlocking transaction patterns in Flask app | backend | 81.7 |
| Dockerize Node.js monorepo | full-stack | 79.7 |
| Build RAG pipeline with vector search | backend | 66.3 |
| Zero-downtime schema migration | full-stack | 74.8 |
| Find and patch all OWASP Top 10 vulnerabilities | debugging | 67.3 |
| Optimize bloated React bundle under 500KB | frontend | 69.8 |
| Implement JWT auth middleware | backend | 73.7 |
| Dockerize Node.js monorepo | full-stack | 75.2 |
| Fix broken responsive layout | frontend | 75.0 |
| Add i18n with locale routing to Next.js app | full-stack | 61.5 |
| Build codebase indexer for LLM context windows | from-scratch | 35.5 |
| Remove AI slop and over-engineering from codebase | refactoring | 88.7 |
| Implement zero-trust API authentication layer | backend | 69.7 |
| Add caching layer to eliminate slow SSR page loads | full-stack | 82.9 |
| Add file upload with S3 presigned URLs | backend | 65.0 |
| Write Kubernetes manifests for Node.js microservice | full-stack | 80.8 |
| Replace console.log with structured logging | refactoring | 58.3 |
| Harden insecure Docker setup with 12 vulnerabilities | code-review | 77.9 |
| Implement multi-tenant row-level security in Postgres | backend | 69.6 |
| Split 1100-line god file into proper modules | refactoring | 71.2 |
| Convert React app to PWA with offline support | frontend | 61.3 |
| Fix N+1 query in dashboard | backend | 57.0 |
| Add retry logic and dead letter queue to Python task queue | backend | 66.4 |
| Build LLM evaluation harness with structured grading | backend | 66.7 |
| Fix race conditions in order matching engine | backend | 81.8 |
| Build real-time portfolio risk calculator | backend | 71.3 |
| Build SaaS admin dashboard from scratch | from-scratch | 48.1 |
| Fix deadlocking transaction patterns in Flask app | backend | 80.2 |
| Build production website with auth and members area | frontend | 60.2 |
| Debug and fix 6 broken database triggers and constraints | debugging | 81.7 |
| Fix hallucination and context window bugs in RAG agent | backend | 75.1 |
| Optimize slow Postgres queries in Flask app | backend | 77.5 |
| Build materialized view refresh pipeline for analytics | backend | 72.0 |
| Write complex SQL report with window functions | backend | 78.8 |
| Build MCP server for database management | backend | 83.8 |
| Add slash commands and moderation to Discord bot | backend | 67.5 |
| Fix flaky test suite | debugging | 75.2 |
| Fix memory leak in event handler | debugging | 70.1 |
| Debug race condition in worker pool | debugging | 80.0 |
| Fix React hydration mismatch | frontend | 76.5 |
| Build terminal UI dashboard | from-scratch | 45.0 |
| Build REST API from scratch | from-scratch | 81.8 |