Cost of AI agent sessions: GPT-6 Sol at $1.74, Claude Opus 5.5 at $3.34

GPT-6 Sol costs $1.74 per session in a scenario with identical token volumes.

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The fact

Claude Opus 5.5 costs $3.34, excluding cache writes, tools, and hosting.

Savings depend on cache reuse, context, and regional processing.

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