ProductsProduct / feature launchLarge Language Models · Efficiency & Inference · Business, Funding & Industry5 sources · Oct 9, 2026

[AINews] Claude Haiku 5.5 — better than GPT-6 Luna at the same pricing

It’s been about a year since Anthropic shipped Haiku 4.5, and with successive launches of Sonnet and Opus and Fable up to 5.5 it was seeming a little forgotten, especially as OpenAI launched Luna 6 alongside Astra and Sol 6.

Proof5 independent outlets

Key points

  • Official launch. @claudeai and @AnthropicAI called it “the cheapest, fastest, and most capable small model we’ve ever released,” costing about 75% less to run than Haiku 4.5 on average.
  • As previously promised, here's Anthropic's new fast, low cost model: Introducing Claude Haiku 5.5.
  • Today, we’re excited to announce the availability of Claude Haiku 5.5 on Amazon Bedrock and Claude Platform on AWS.
  • Anthropic PBC today released Claude Haiku 5.5, pricing its newest small model at roughly a quarter of what Haiku 4.5 costs to run.

Sources (5)

  • [1][AINews] Claude Haiku 5.5 — better than GPT-6 Luna at the same pricing
    Latent Space · Oct 8, 07:27 AM
    It’s been about a year since Anthropic shipped Haiku 4.5, and with successive launches of Sonnet and Opus and Fable up to 5.5 it was seeming a little forgotten, especially as OpenAI launched Luna 6 alongside Astra and Sol 6.
    - Official launch. @claudeai and @AnthropicAI called it “the cheapest, fastest, and most capable small model we’ve ever released,” costing about 75% less to run than Haiku 4.5 on average.
  • [2]Claude Haiku 5.5
    Simon Willison's Weblog · Oct 7, 08:56 PM
    As previously promised, here's Anthropic's new fast, low cost model: Introducing Claude Haiku 5.5.
  • [3]Introducing Claude Haiku 5.5 on AWS
    AWS Machine Learning Blog · Oct 7, 06:52 PM
    Today, we’re excited to announce the availability of Claude Haiku 5.5 on Amazon Bedrock and Claude Platform on AWS.
  • [4]Anthropic releases Claude Haiku 5.5 small model and halves Sonnet 5.5 cache read prices
    SiliconANGLE: AI · Oct 7, 10:28 PM
    Anthropic PBC today released Claude Haiku 5.5, pricing its newest small model at roughly a quarter of what Haiku 4.5 costs to run.
  • [5]AI off the Charts II
    AI Supremacy · Oct 9, 09:20 AM

Extractive summary: sentences quoted from the sources.

Hype check

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