Workbooks

Real examples with real costs. Each workbook links to runnable code.

Example	What It Does	Cost	Key Insight
Async Agents	Deep research with recursive agent trees	$0.34 for 47 agents	Async SLA enables multi-round agentic workflows
Synthetic Data Generation	Generate training data with quality filtering	$3.21 for 10K samples	3-stage pipeline in 3 hours, not 3 days
Data Processing Pipelines	Clean and enrich messy records	$0.80 for 50K records	LLM-powered normalization at pipeline scale
Embeddings	Semantic search over document corpus	$0.03 for 1.6M tokens	70% cheaper than OpenAI for same quality
Async Evals	Grade LLM outputs with a frontier judge model	$0.50 for 817 answers + judgements	Rigorous evals as a background batch, not a hot-path cost
LangSmith Evals at Scale	Run LangSmith LLM-as-judge evals via Doubleword's batch API	$8.82 for 10K evals	97% cheaper than GPT-5.5 real-time, zero 429 errors
Bug Detection Ensemble	Classify security vulnerabilities	$0.40 for 4,642 samples	Run twice for calibration, still under $1
Dataset Labelling	Build company datasets via search + LLM	$1.05 for 188 companies	100% recall vs Gartner Magic Quadrant
Structured Extraction	Extract fields from scanned receipts	$0.12 for 626 receipts	Qwen3-30B beats GPT-5.2 at 1/12th cost
Image Summarization	Caption images for social media	$0.10 for 1,000 images	Vision batch makes captioning automatic
AI Personal Assistants	Always-on agents with background inference	$0.80 for ~4M tokens/mo	Background tasks at 4x lower cost than real-time
Asynchronous Event Listeners	Process events asynchronously at scale	$0.15 for 10K events	Decouple event handling from request paths
ETL & Pipeline Sanitization	Sanitize and transform data in ETL pipelines	$0.50 for 100K records	LLM-powered sanitization catches what regex misses
Deep Research	Recursive research agents over the web	$0.34 for 47 agents	Async SLA enables multi-round deep research
Long Running Agents	Agents that run for hours, not seconds	$1.20 for 8h run	Background inference unlocks long-horizon agents
OpenClaw	Open-source computer-use agent at batch cost	$0.60 for 1K actions	Computer use without real-time premiums