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Anthropic model

Claude Sonnet 4.6

Claude Sonnet 4.6 in the public Anthropic catalog.

Provider
Anthropic
Availability
Available
Model ID
claude-sonnet-4-6
Snapshot
2026-10-07
Evaluation Verdict

Claude Sonnet 4.6 advances agentic software engineering with 74.5% on SWE-bench Verified and 1420 Coding Elo, combining low-latency code synthesis with deep algorithmic verification.

Claude Sonnet 4.6 Benchmarks & Agentic Accuracy

Verified primary research & developer preference metrics

Primary Sources Verified
SWE-bench Verified
74.5%
ThinkingAnthropic Frontier Card ↗
LiveCodeBench
65.8%
ThinkingLiveCodeBench ↗
LMSYS Coding Elo
1420Elo
Coding ArenaLMSYS Arena ↗
AIME 2024 / 2025
86%
ThinkingAnthropic Frontier Card ↗
Pricing ($ / 1M tokens)
$3/ $15
$0.35 cached readStandard API Pricing

What This Means in Real Software Development

  • Achieves 74.5% SWE-bench Verified, delivering elite multi-file bug fixes across large-scale monorepos.
  • Refined code synthesis avoids hallucinations in rare Go/Rust concurrency primitives and complex database transactions.
  • Fast output speed ensures minimal developer wait time during interactive TUI pairing.
  • Full native support for Swarm DAG task program integration barriers.

Swarm Multi-Agent Topology

Tier 1: Enterprise Lead EngineerRole: Primary / Planner

Best Paired With: Gemini 3.8 Flash as Coder subagents

High-confidence planning eliminates DAG circularities and ensures accurate scope isolation across Coder worktrees.

Git Worktree Isolation Advantage:

Swarm guarantees zero branch pollution by committing Sonnet 4.6 diffs to isolated sibling worktrees.

What Developers & Practitioners Are Saying

Real-world field observations, production strengths, and developer consensus

Field Consensus

"Production-hardened systems engineering model from Anthropic, delivering dependable multi-turn code edits."

Verified Real-World Strengths

  • 74.5% SWE-bench Verified
  • Superb architectural consistency across multi-stage Task Programs
  • Flawless TypeScript, Python, and Go idiom generation

Production Caveats & Gaps

  • Benefits from external verification checks to prevent subtle semantic bugs
Benchmark Reality Check

What the benchmark tests: Evaluates full-stack software development and refactoring accuracy.

Production caveat: Best deployed as a dedicated Coder subagent inside isolated worktrees.

Primary Sources & Methodology Citations

Claude Sonnet 4.6 model overview

Claude Sonnet 4.6 is listed in the public Swarm catalog through Anthropic. This page summarizes the verified catalog fields used by Swarm without claiming real-time access for every provider account.

Provider
Anthropic
Family
Claude
Context window
1M tokens
Thinking support
off · low · medium · high
Availability status
Available
Catalog ID
anthropic/claude-sonnet-4-6
  • File input
  • Image input
  • Text input
  • Text output
  • Reasoning
  • Structured output
  • JSON
  • Batch

Run Claude Sonnet 4.6 in Swarm

Verified CLI workflow & multi-agent architecture

Quickstart Guide →
bash — swarm run
$swarm ctl model set --provider anthropic --model anthropic/claude-sonnet-4-6

# Or switch interactively inside the terminal TUI:

>/models

Subagent Role Matrix

Assign Claude Sonnet 4.6 to specialized system roles in ~/.swarm/config.json:

  • Primary / Planner: Orchestrates full task DAGs and multi-stage pipelines.
  • Coder Subagent: Generates code and unit tests inside private Git worktrees.
  • Finder Subagent: Performs read-only code search, symbol discovery, and mapping.
System Agent Roles →Why Swarm Architecture →
← All Anthropic models

Public catalog snapshot. Catalog availability is not a real-time provider status or an access guarantee.