Qwen3.5 122b A10b [Q4_K_XL]

LM Studio

262K context<$0.01/M input<$0.01/M output

1493peak 1509

Avg Score

72.5

Avg Cost

$0.07

Score/$

1102.7

Runs

Win/Loss/Draw

Scoring Dimensions

Score Distribution

Category ELOs

multi-languagehard

1910

frontendeasy

1771

refactoringexpert

1757

debuggingexpert

1740

from-scratchexpert

1735

full-stackhard

1674

full-stack

1621

frontendhard

1605

debugging

1598

frontendmedium

1584

debugginghard

1568

debuggingmedium

1561

full-stackmedium

1554

frontend

1547

backendmedium

1528

backendexpert

1517

multi-language

1505

backend

1481

refactoring

1478

backendhard

1455

refactoringmedium

1434

from-scratch

1363

from-scratchhard

1323

code-review

1298

code-reviewmedium

1290

from-scratchmedium

1262

frontendexpert

1221

code-reviewhard

1164

multi-languageexpert

1115

from-scratcheasy

917

backendeasy

698

All Results

Task	Category	Score	Duration	Cost
Migrate callback-hell Express app to async/await	refactoring	75.8	1m 32s	$0.05
Build production website with auth and members area	frontend	61.7	7m 59s	$0.09
Build SaaS admin dashboard from scratch	from-scratch	57.0	3m 49s	$0.05
Fix broken responsive layout	frontend	79.7	1m 5s	$0.06
Add GraphQL layer over REST API	multi-language	81.8	1m 21s	$0.09
Fix race conditions in order matching engine	backend	84.8	4m 5s	$0.05
Fix 12 WCAG accessibility violations in checkout form	frontend	80.1	2m 20s	$0.06
Implement multi-tenant row-level security in Postgres	backend	42.0	5m 16s	$0.13
Fix broken GitHub Actions CI pipeline	debugging	84.1	1m 17s	$0.10
Debug and fix 6 broken database triggers and constraints	debugging	90.7	34.9s	$0.02
Add cursor-based pagination to REST API	backend	82.8	1m 30s	$0.10
Add caching layer to eliminate slow SSR page loads	full-stack	80.5	1m 26s	$0.06
Harden insecure Docker setup with 12 vulnerabilities	code-review	78.5	40.1s	$0.05
Convert React app to PWA with offline support	frontend	69.6	1m 21s	$0.06
Fix auth bypass vulnerability	debugging	84.8	8m 35s	$0.20
Find and fix 4 hidden backdoors in Flask app	debugging	89.5	33.6s	$0.01
Write tests for untested legacy Flask service	code-review	49.2	9m 13s	$0.12
Write complex SQL report with window functions	backend	62.0	2m 30s	$0.05
Implement zero-trust API authentication layer	backend	69.7	2m 37s	$0.06
Add Google OAuth2 login to Express app	full-stack	84.6	1m 59s	$0.10
Build CLI tool with subcommands and config	from-scratch	63.5	3m 39s	$0.05
Implement Stripe webhook handler	backend	82.0	1m 19s	$0.09
Implement JWT auth middleware	backend	51.9	1m 14s	$0.10
Replace console.log with structured logging	refactoring	47.7	2m 26s	$0.10
Refactor monolithic handler to CQRS	refactoring	73.7	2m 47s	$0.11
Add virtual scrolling to table rendering 5000 rows	frontend	82.8	1m 36s	$0.10
Build terminal UI dashboard	from-scratch	61.0	2m 5s	$0.02
Fix Node.js stream backpressure causing OOM on large files	backend	86.3	1m 3s	$0.09
Add retry logic and dead letter queue to Python task queue	backend	62.0	1m 26s	$0.02
Fix N+1 query in dashboard	backend	52.9	7m 0s	$0.08
Fix hallucination and context window bugs in RAG agent	backend	57.2	9m 1s	$0.12
Build REST API from scratch	from-scratch	69.3	41.2s	<$0.01
Fix data integrity bugs in denormalized e-commerce schema	debugging	92.8	1m 51s	$0.03
Build materialized view refresh pipeline for analytics	backend	87.8	2m 23s	$0.03
Port Python CLI to Rust	multi-language	46.8	1m 7s	$0.02
Remove AI slop and over-engineering from codebase	refactoring	95.3	50.4s	$0.04
Add slash commands and moderation to Discord bot	backend	84.1	46.0s	<$0.01
Write Kubernetes manifests for Node.js microservice	full-stack	85.0	38.0s	$0.05
Debug race condition in worker pool	debugging	90.9	13.1s	<$0.01
Add Redis caching layer to Express API	backend	82.7	1m 54s	$0.10
Build distributed node cluster with gossip protocol	from-scratch	61.0	1m 36s	$0.02
Build LLM evaluation harness with structured grading	backend	84.0	2m 46s	$0.03
Add file upload with S3 presigned URLs	backend	74.1	2m 4s	$0.10
Fix React hydration mismatch	frontend	79.3	1m 15s	$0.10
Write integration tests for payment flow	code-review	67.4	2m 21s	$0.10
Split 1100-line god file into proper modules	refactoring	49.3	3m 8s	$0.11
Build MCP server for database management	backend	74.5	1m 48s	$0.03
Add i18n with locale routing to Next.js app	full-stack	80.9	3m 6s	$0.07
Fix memory leak in event handler	debugging	76.0	1m 15s	$0.10
Code review: identify security vulns	code-review	66.5	8m 58s	$0.21
Build real-time portfolio risk calculator	backend	53.9	3m 8s	$0.05
Build codebase indexer for LLM context windows	from-scratch	37.1	2m 26s	$0.04
Implement background job scheduler with persistence	backend	52.5	3m 48s	$0.06
Implement transformer inference engine with KV cache	from-scratch	80.9	1m 8s	$0.02
Add rate limiting middleware	backend	47.4	57.5s	$0.02
Find and patch all OWASP Top 10 vulnerabilities	debugging	70.7	2m 16s	$0.06
Optimize bloated React bundle under 500KB	frontend	80.8	2m 46s	$0.06
Add WebSocket real-time updates	full-stack	81.8	36.7s	$0.05
Fix flaky test suite	debugging	85.0	2m 13s	$0.03
Optimize slow Postgres queries in Flask app	backend	76.0	7m 43s	$0.10
Add streaming SSE endpoint for LLM chat	backend	84.6	1m 37s	$0.10
Fix deadlocking transaction patterns in Flask app	backend	81.7	1m 26s	$0.02
Dockerize Node.js monorepo	full-stack	79.7	1m 3s	$0.05
Build RAG pipeline with vector search	backend	66.3	1m 20s	$0.03
Zero-downtime schema migration	full-stack	74.8	32.0s	$0.01