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Qwen3.6 27b [BF16]
Qwen
262K context<$0.01/M input<$0.01/M output
1530peak 1547
Avg Score
75.7
Avg Cost
—
Score/$
—
Runs
70
Win/Loss/Draw
Scoring Dimensions
Score Distribution
Category ELOs
multi-languageexpert
2442code-reviewhard
2385refactoringexpert
2296backendeasy
2038frontendexpert
1971refactoring
1688from-scratcheasy
1687code-review
1645refactoringmedium
1643backendexpert
1631backendmaster
1613backendhard
1592full-stackhard
1578code-reviewmedium
1565from-scratchhard
1559backend
1552debuggingexpert
1539multi-language
1521full-stack
1494frontendmaster
1489from-scratch
1471debugging
1470frontend
1454debugginghard
1450frontendmedium
1450backendmedium
1439debuggingmedium
1439full-stackmedium
1365frontendeasy
1326from-scratchmedium
1164multi-languagehard
1052from-scratchexpert
1003frontendhard
710All Results
| Task | Category | Score |
|---|---|---|
| Replace console.log with structured logging | refactoring | 72.2 |
| Build terminal UI dashboard | from-scratch | 59.8 |
| Build distributed node cluster with gossip protocol | from-scratch | 73.5 |
| Add streaming SSE endpoint for LLM chat | backend | 53.9 |
| Build real-time portfolio risk calculator | backend | 72.5 |
| Build codebase indexer for LLM context windows | from-scratch | 81.1 |
| Add i18n with locale routing to Next.js app | full-stack | 72.0 |
| Add rate limiting middleware | backend | 82.2 |
| Fix Node.js stream backpressure causing OOM on large files | backend | 71.9 |
| Build interactive data visualization dashboard | frontend | 63.1 |
| Implement JWT auth middleware | backend | 60.0 |
| Build 3D browser game with physics and multiplayer sync | frontend | 81.0 |
| Add virtual scrolling to table rendering 5000 rows | frontend | 71.5 |
| Add Google OAuth2 login to Express app | full-stack | 69.5 |
| Build multi-tool LLM agent runtime | backend | 80.7 |
| Build SaaS admin dashboard from scratch | from-scratch | 64.1 |
| Add GraphQL layer over REST API | multi-language | 66.9 |
| Implement background job scheduler with persistence | backend | 74.9 |
| Migrate Express monolith to modular architecture | backend | 82.5 |
| Build CLI tool with subcommands and config | from-scratch | 44.1 |
| Fix and extend Chrome browser extension | frontend | 69.3 |
| Add file upload with S3 presigned URLs | backend | 75.7 |
| Add cursor-based pagination to REST API | backend | 69.0 |
| Implement transformer inference engine with KV cache | from-scratch | 69.5 |
| Write tests for untested legacy Flask service | code-review | 77.7 |
| Implement Stripe webhook handler | backend | 76.5 |
| Build MCP server for database management | backend | 67.7 |
| Fix memory leak in event handler | debugging | 81.7 |
| Fix deadlocking transaction patterns in Flask app | backend | 83.7 |
| Add slash commands and moderation to Discord bot | backend | 78.0 |
| Find and patch all OWASP Top 10 vulnerabilities | debugging | 66.8 |
| Fix race conditions in order matching engine | backend | 82.5 |
| Optimize slow Postgres queries in Flask app | backend | 79.0 |
| Fix N+1 query in dashboard | backend | 82.8 |
| Find and fix 4 hidden backdoors in Flask app | debugging | 84.3 |
| Build materialized view refresh pipeline for analytics | backend | 83.7 |
| Build RAG pipeline with vector search | backend | 75.2 |
| Zero-downtime schema migration | full-stack | 82.4 |
| Code review: identify security vulns | code-review | 77.8 |
| Fix auth bypass vulnerability | debugging | 79.7 |
| Convert React app to PWA with offline support | frontend | 69.0 |
| Fix broken GitHub Actions CI pipeline | debugging | 73.7 |
| Port Python CLI to Rust | multi-language | 79.8 |
| Build LLM evaluation harness with structured grading | backend | 79.9 |
| Refactor monolithic handler to CQRS | refactoring | 81.7 |
| Implement multi-tenant row-level security in Postgres | backend | 77.3 |
| Fix data integrity bugs in denormalized e-commerce schema | debugging | 81.5 |
| Dockerize Node.js monorepo | full-stack | 69.3 |
| Build production website with auth and members area | frontend | 73.7 |
| Write Kubernetes manifests for Node.js microservice | full-stack | 77.2 |
| Implement zero-trust API authentication layer | backend | 67.7 |
| Fix hallucination and context window bugs in RAG agent | backend | 85.5 |
| Build REST API from scratch | from-scratch | 82.0 |
| Split 1100-line god file into proper modules | refactoring | 78.7 |
| Optimize bloated React bundle under 500KB | frontend | 67.3 |
| Write complex SQL report with window functions | backend | 77.2 |
| Harden insecure Docker setup with 12 vulnerabilities | code-review | 82.5 |
| Add caching layer to eliminate slow SSR page loads | full-stack | 83.3 |
| Add WebSocket real-time updates | full-stack | 85.6 |
| Fix 12 WCAG accessibility violations in checkout form | frontend | 66.2 |
| Remove AI slop and over-engineering from codebase | refactoring | 87.5 |
| Add retry logic and dead letter queue to Python task queue | backend | 78.0 |
| Add Redis caching layer to Express API | backend | 79.1 |
| Write integration tests for payment flow | code-review | 88.5 |
| Migrate callback-hell Express app to async/await | refactoring | 78.0 |
| Fix flaky test suite | debugging | 84.9 |
| Debug and fix 6 broken database triggers and constraints | debugging | 87.8 |
| Fix React hydration mismatch | frontend | 83.6 |
| Fix broken responsive layout | frontend | 70.5 |
| Debug race condition in worker pool | debugging | 85.2 |