Models & Labs
Anthropic Launches Claude Haiku 5.5
Matt Wolfehigh confidence
Why it matters
- →Provides a cheaper alternative to larger models for routine tasks
- →Demonstrates rapid iteration in the Haiku model series
- →Critical for developers optimizing API costs
Anthropic has officially launched Claude Haiku 5.5, the latest iteration of its lightweight and cost-effective language model. This update aims to improve speed and efficiency for developers handling high-throughput applications. The release reinforces Anthropic's strategy of offering a tiered model lineup that balances performance with computational cost.
Read originalThe story around this
Earlier coverage that leads up to this article, and what followed. Lines connect each piece to the closest one after it, converging here.
How we got here
- 1Anthropic Releases Claude Fable & Mythos 5
Matt Wolfe · June 12, 2026 · Same story
- 2Anthropic launches Claude Sonnet 5 for affordable AI agents
TechCrunch AI · June 30, 2026 · Same story
- 3Claude Sonnet 5 Released by Anthropic
AI Explained · July 2, 2026 · Same story
- 4Claude Sonnet 5 and Claude Fable 5 Return
Lev Selector · July 3, 2026 · Same story
- 5Anthropic Launches Claude Opus 5 Model
Anthropic · July 24, 2026 · Same story
- 6Anthropic Releases Claude Opus 5
Matt Wolfe · July 31, 2026 · Same story
- 7Anthropic launches Claude Fable 5.1 model
The Rundown AI · September 2, 2026 · Same story
- 8Claude Haiku 5.5 arrives in GitHub Copilot
GitHub Changelog · October 7, 2026 · Same story
What happened next
- 9Claude Code v2.1.293 updates Haiku and fixes agent bugs
Claude Code Releases · October 10, 2026 · Same story
Follow this story
Open the full story →Anthropic Releases Claude Sonnet 5.5 and Code Mods
4 developments
- Oct 2 · Matt Wolfe
Anthropic Releases Claude Sonnet 5.5 and Code Mods - Oct 9 · The AI Daily Brief
Anthropic Releases Claude Haiku 5.5 for Cost Efficiency↳ Anthropic released Claude Haiku 5.5 to target cost-efficient AI inference. - Oct 9 · Matt Wolfe
Anthropic Launches Claude Haiku 5.5 (This article) - Oct 9 · Lev Selector
Mistral Large 4 and Claude Haiku 5.5 Released↳ Mistral releases Large 4 'Le Chonk'.
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