OpenRouter model
Anthropic: Claude Sonnet 5
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
- Provider
- OpenRouter
- Availability
- Available
- Model ID
- anthropic/claude-sonnet-5
- Snapshot
- 2026-10-07
Anthropic: Claude Sonnet 5 Benchmarks & Agentic Accuracy
Verified primary research & developer preference metrics
What This Means in Real Software Development
- 75.8% autonomous pass rate on SWE-bench Verified real-world enterprise repositories.
- Advanced multi-turn reasoning handles 50+ step development tasks with 0 context drift or goal abandonment.
- Exceptional speed-to-intelligence ratio, generating production-grade patches with rapid execution.
- Native tool-calling stability enables flawless multi-file patching across monorepos.
Swarm Multi-Agent Topology
Best Paired With: Gemini 3.8 Flash for subagent swarms
The gold standard for primary orchestration. Manages full lifecycle from problem framing to task program DAG decomposition.
Orchestrates up to 8 concurrent worktree subagents without race conditions.
What Developers & Practitioners Are Saying
Real-world field observations, production strengths, and developer consensus
"Anthropic's premier workhorse coding engine, offering near-Opus reasoning depth at Sonnet execution speed."
Verified Real-World Strengths
- 75.8% on SWE-bench Verified
- High-speed diff synthesis with zero extraneous explanation
- Robust handling of large 200k context windows
Production Caveats & Gaps
- Higher pricing than open-weights alternatives like DeepSeek V3
Primary Sources & Methodology Citations
- Claude Sonnet 5 Technical Report — Anthropic (March 2026)
Head-to-Head Frontier Comparisons: Anthropic: Claude Sonnet 5 vs Rivals
Standardized, side-by-side benchmark & economics comparison against peer models
| Model | Role / Tier | SWE-bench | LiveCodeBench | LMSYS Elo | AIME | Input / Output |
|---|---|---|---|---|---|---|
Anthropic: Claude Sonnet 5OpenRouterCurrent | Tier 1: Master Architect | 75.8% | 67.2% | 1435 | 87.5% | $3 / $15 |
OpenAI o3OpenAI Compare Anthropic: Claude Sonnet 5 vs OpenAI o3 → | Tier 1: Frontier Architect & Deductive Specialist | 71.7% | 76.2% | 1415 | 92.4% | $5 / $20 |
Gemini 3.1 Pro PreviewGoogle Compare Anthropic: Claude Sonnet 5 vs Gemini 3.1 Pro Preview → | Tier 1: Frontier Large-Context Architect | 71% | 62.4% | 1395 | 86.5% | $2.5 / $10 |
xAI Grok 4.20xAI Compare Anthropic: Claude Sonnet 5 vs xAI Grok 4.20 → | Tier 1: Frontier Systems Specialist | 58.5% | 54.2% | 1375 | 76% | $2 / $8 |
Claude Opus 4.6Anthropic Compare Anthropic: Claude Sonnet 5 vs Claude Opus 4.6 → | Tier 1: Senior Principal Architect | 78% | 68.5% | 1438 | 90% | $15 / $75 |
Anthropic: Claude Sonnet 5 model overview
Anthropic: Claude Sonnet 5 is listed in the public Swarm catalog through OpenRouter. This page summarizes the verified catalog fields used by Swarm without claiming real-time access for every provider account.
- Provider
- OpenRouter
- Family
- OpenRouter
- Context window
- 1M tokens
- Thinking support
- off · low · medium · high · xhigh · max
- Availability status
- Available
- Catalog ID
- openrouter/anthropic/claude-sonnet-5
Run Anthropic: Claude Sonnet 5 in Swarm
Verified CLI workflow & multi-agent architecture
swarm ctl model set --provider openrouter --model openrouter/anthropic/claude-sonnet-5# Or switch interactively inside the terminal TUI:
/modelsSubagent Role Matrix
Assign Anthropic: Claude Sonnet 5 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.
Public catalog snapshot. Catalog availability is not a real-time provider status or an access guarantee.