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Nemotron 3 Nano 30b A3b
OpenRouter
262K context$0.05/M input$0.20/M output
1192peak 1207
Avg Score
56.3
Avg Cost
<$0.01
Score/$
9401.1
Runs
65
Win/Loss/Draw
Scoring Dimensions
Score Distribution
Category ELOs
refactoringexpert
1887debuggingmedium
1415debuggingexpert
1396debugging
1351refactoring
1341full-stackmedium
1315backendmedium
1281full-stack
1252debugginghard
1242refactoringmedium
1236frontendmedium
1170full-stackhard
1167backend
1165code-review
1158frontend
1121backendexpert
1104code-reviewmedium
1102code-reviewhard
1088backendhard
1060multi-language
963from-scratch
763frontendeasy
761frontendexpert
708from-scratchhard
661multi-languagehard
646backendeasy
183from-scratchmedium
176multi-languageexpert
0from-scratcheasy
0from-scratchexpert
0frontendhard
0All Results
| Task | Category | Score |
|---|---|---|
| Build REST API from scratch | from-scratch | 52.3 |
| Add caching layer to eliminate slow SSR page loads | full-stack | 65.1 |
| Implement background job scheduler with persistence | backend | 23.8 |
| Find and fix 4 hidden backdoors in Flask app | debugging | 57.4 |
| Fix hallucination and context window bugs in RAG agent | backend | 56.3 |
| Implement transformer inference engine with KV cache | from-scratch | 31.0 |
| Build terminal UI dashboard | from-scratch | 41.0 |
| Write tests for untested legacy Flask service | code-review | 34.9 |
| Find and patch all OWASP Top 10 vulnerabilities | debugging | 60.3 |
| Build codebase indexer for LLM context windows | from-scratch | 31.6 |
| Build production website with auth and members area | frontend | 53.8 |
| Build LLM evaluation harness with structured grading | backend | 34.3 |
| Split 1100-line god file into proper modules | refactoring | 69.2 |
| Build real-time portfolio risk calculator | backend | 37.6 |
| Add WebSocket real-time updates | full-stack | 65.0 |
| Write complex SQL report with window functions | backend | 55.1 |
| Fix auth bypass vulnerability | debugging | 68.3 |
| Dockerize Node.js monorepo | full-stack | 70.5 |
| Add Redis caching layer to Express API | backend | 56.1 |
| Fix flaky test suite | debugging | 84.4 |
| Implement zero-trust API authentication layer | backend | 65.1 |
| Optimize bloated React bundle under 500KB | frontend | 59.3 |
| Build materialized view refresh pipeline for analytics | backend | 55.4 |
| Write Kubernetes manifests for Node.js microservice | full-stack | 84.3 |
| Code review: identify security vulns | code-review | 57.1 |
| Add streaming SSE endpoint for LLM chat | backend | 67.3 |
| Fix memory leak in event handler | debugging | 80.7 |
| Fix race conditions in order matching engine | backend | 60.0 |
| Debug race condition in worker pool | debugging | 76.8 |
| Add i18n with locale routing to Next.js app | full-stack | 56.4 |
| Fix data integrity bugs in denormalized e-commerce schema | debugging | 88.1 |
| Implement JWT auth middleware | backend | 43.8 |
| Implement multi-tenant row-level security in Postgres | backend | 35.5 |
| Fix deadlocking transaction patterns in Flask app | backend | 68.9 |
| Migrate callback-hell Express app to async/await | refactoring | 59.0 |
| Add cursor-based pagination to REST API | backend | 68.7 |
| Add virtual scrolling to table rendering 5000 rows | frontend | 32.3 |
| Fix broken responsive layout | frontend | 60.1 |
| Replace console.log with structured logging | refactoring | 44.4 |
| Optimize slow Postgres queries in Flask app | backend | 68.7 |
| Implement Stripe webhook handler | backend | 64.0 |
| Add Google OAuth2 login to Express app | full-stack | 61.1 |
| Add slash commands and moderation to Discord bot | backend | 56.8 |
| Build CLI tool with subcommands and config | from-scratch | 27.5 |
| Remove AI slop and over-engineering from codebase | refactoring | 74.0 |
| Debug and fix 6 broken database triggers and constraints | debugging | 67.8 |
| Build SaaS admin dashboard from scratch | from-scratch | 28.8 |
| Add file upload with S3 presigned URLs | backend | 84.1 |
| Add rate limiting middleware | backend | 34.9 |
| Zero-downtime schema migration | full-stack | 67.2 |
| Port Python CLI to Rust | multi-language | 24.8 |
| Convert React app to PWA with offline support | frontend | 60.9 |
| Fix 12 WCAG accessibility violations in checkout form | frontend | 42.9 |
| Fix broken GitHub Actions CI pipeline | debugging | 73.2 |
| Add retry logic and dead letter queue to Python task queue | backend | 77.3 |
| Harden insecure Docker setup with 12 vulnerabilities | code-review | 72.4 |
| Write integration tests for payment flow | code-review | 66.0 |
| Build RAG pipeline with vector search | backend | 31.7 |
| Refactor monolithic handler to CQRS | refactoring | 75.0 |
| Build distributed node cluster with gossip protocol | from-scratch | 22.3 |
| Fix React hydration mismatch | frontend | 75.2 |
| Build MCP server for database management | backend | 33.1 |
| Fix Node.js stream backpressure causing OOM on large files | backend | 66.8 |
| Fix N+1 query in dashboard | backend | 37.7 |
| Add GraphQL layer over REST API | multi-language | 54.3 |