Claude Sonnet 4.6
used in
19
stacks
Anthropic's workhorse coding/agent model; strong tool use, long context.
Sonnet 4.6 is the default workhorse for production agents. Strong at multi-step tool use, code generation, and structured reasoning. Long context window. Commonly paired with prompt caching for cost efficiency on agent workloads.
Strengths
- Excellent tool-use and structured-output reliability
- Long context supports large codebases / document sets
- Best-in-class for agentic coding workflows
Tradeoffs
- More expensive than Haiku for high-volume classification
- API-only (no on-prem / open weights)
Used in 19 stacks
Reference: Pay-per-Call API Agent
reference
agent-payments
Reference: Deep Browser Research Agent
reference
research-deep
Public: Claude Code as an agent harness
researched
coding-assistant
Reference: Single-User Coding Pair Programmer
reference
coding-assistant
Reference: Team-Scale Coding Assistant
reference
coding-assistant
Reference: Natural-Language Data Analyst
reference
data-analysis
Reference: Contract Extraction Pipeline
reference
document-processing
Reference: Contract Redline Assistant
reference
legal-review
Reference: Brand-Voice Content Generation
reference
marketing-content
Reference: Meeting Assistant
reference
meeting-assistant
Reference: Incident Response Agent
reference
ops-incident-response
Reference: Enterprise-Scale Knowledge Agent
reference
rag-over-docs
Reference: Mid-Scale RAG Over Internal Docs
reference
rag-over-docs
Reference: Candidate Sourcing Agent
reference
recruiting-sourcing
Public: Replit Agent coding stack
researched
coding-assistant
Reference: Financial Deep Research Agent
reference
research-deep
Reference: Outbound SDR Research + Drafting Agent
reference
sales-sdr-outbound
Reference: Mid-Volume Support Triage Agent
reference
customer-support-triage
Reference: Inbound Voice Support Agent
reference
voice-support