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Sonnet 5 nearly matches Opus 4.8 on key tests at half the price—but only until September. Here's the real cost-performance tradeoff.

Executive Summary: Claude Sonnet 5 beats Sonnet 4.6 on all benchmarks at lower intro pricing, but standard rates and tokenizer expansion shift cost dynamics.

Topic Breakdown:

Intro: The core shift
Analysis: Strategic consequences
Bottom Line: Impact for executives

Strategic Impact: The intro pricing window closes August 31, 2026. Enterprises that migrate now can lock in lower costs for agentic coding and tool-use tasks. Failure to act means paying 50% more per token after the deadline, while competitors gain a cost advantage.

Decoding the signal for leaders. For the full strategic analysis, visit Signal Daily News.

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