Anthropic’s September 22, 2026 announcement that Claude Haiku 5.5 would follow Sonnet 5.5 and Opus 5.5 “in the coming weeks” is the main catalyst shaping market odds. Sonnet 5.5 shipped September 28 with efficiency and safety gains, yet Haiku 5.5 remains unreleased as of October 4, leaving the fast, low-cost tier at the 4.5 version from October 2025. The Haiku line skipped 4.6 entirely while higher tiers advanced rapidly, underscoring Anthropic’s focus on balancing speed, cost, and agentic performance against competitors. Traders watch for imminent deployment on the API and platforms, alongside Haiku 4.5’s earliest deprecation date of October 15, 2026, which could accelerate the successor’s arrival.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedView resolved

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