I tested ChatGPT-5.4 vs Claude Opus 4.6 — is the $20 upgrade worth it?

Is Claude Opus 4.6 worth $20/month? I ran 7 stress tests against the free ChatGPT-5.4 to compare coding, logic, and daily tasks. Here’s the clear winner.
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Meta Debuts ‘Muse Spark’ AI, Challenging Rival Models From OpenAI, Google

Meta launches Muse Spark, a new multimodal AI model with advanced reasoning and efficiency gains, as it aims to compete with ...