OpenRouter model
Anthropic: Claude Opus 4.5
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
- Provider
- OpenRouter
- Availability
- Available
- Model ID
- anthropic/claude-opus-4.5
- Snapshot
- 2026-10-07
Anthropic: Claude Opus 4.5 Benchmarks & Agentic Accuracy
Verified primary research & developer preference metrics
What This Means in Real Software Development
- Exceptional multi-step logical deduction (88.2% on AIME 2024, 74.5% on GPQA Diamond).
- Solves 76.5% of real-world GitHub issues on SWE-bench Verified with exhaustive edge-case test generation.
- Uncompromising analytical depth, making it the supreme choice for cryptographic, protocol, and kernel refactoring.
- Priced at $15.00/M input, it is designed for highest-leverage architectural review and planning.
Swarm Multi-Agent Topology
Best Paired With: Gemini 3.8 Flash for fast subagent execution
Supreme model for high-stakes system architecture, zero-day security auditing, and critical algorithm proofs.
Audits Swarm worktree diffs for subtle race conditions, deadlocks, and memory leaks before promotion.
What Developers & Practitioners Are Saying
Real-world field observations, production strengths, and developer consensus
"A major generational leap in frontier architectural reasoning, combining deep reflection with massive context coherence for enterprise codebases."
Verified Real-World Strengths
- Exceptional multi-repo architectural synthesis and dependency mapping
- High reasoning depth on intricate distributed systems design and protocols
- Ultra-stable tool calling syntax across hundreds of autonomous turns
Production Caveats & Gaps
- Premium pricing tier requiring disciplined subagent delegation
- Output speed optimized for depth rather than high-frequency typing
Primary Sources & Methodology Citations
- Claude Opus 4.5 System Architecture — Anthropic (November 2025)
Anthropic: Claude Opus 4.5 model overview
Anthropic: Claude Opus 4.5 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
- 200K tokens
- Thinking support
- off
- Availability status
- Available
- Catalog ID
- openrouter/anthropic/claude-opus-4.5
Run Anthropic: Claude Opus 4.5 in Swarm
Verified CLI workflow & multi-agent architecture
swarm ctl model set --provider openrouter --model openrouter/anthropic/claude-opus-4.5# Or switch interactively inside the terminal TUI:
/modelsSubagent Role Matrix
Assign Anthropic: Claude Opus 4.5 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.