#173 Max: Claude Sonnet 4.5 vs. GPT-5 in n8n – A Brutal, Honest Review

Anthropic's new Claude Sonnet 4.5 is outperforming GPT-5 on coding benchmarks. 🥊 We put it through a rigorous, head-to-head battle inside n8n AI agents to see if the hype is real.

We’ll talk about:

• A deep dive and battle-test of Claude Sonnet 4.5 against competitors like GPT-5 in real-world n8n workflows.
• The game-changing discovery: how connecting to Sonnet 4.5 via OpenRouter unlocks a secret 1 MILLION token context window—5x more than advertised.
• The results of our three-part gauntlet, including a Content Creation Showdown, a massive Context Window Evaluation, and a complex Tool Calling test.
• The final verdict: exactly when you should use Sonnet 4.5 (for coding) versus when to use GPT-5 (for business comms).
• Plus, why the Specialized Sub-Agent architecture is the key to building reliable, complex automations with this new model.

Keywords: Claude Sonnet 4.5, Anthropic, GPT-5, n8n, AI Agents, OpenRouter, SWE-bench, AI Comparison, AI Automation, No-Code AI, AI Coding

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