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Anthropic updates Claude models, Haiku 4.5 passes safety tests

By PulseAugur Editorial · Summary by gemini-2.5-flash-lite from 3 sources

Anthropic has updated its Claude Code product to allow users to select specific models, including Opus 4.7, Sonnet 4.6, and various 4.5 versions, through commands or environment variables. Separately, an evaluation of Anthropic's smallest model, Haiku 4.5, using the Cyber Verification Program (CVP) found it to be highly effective, with no exploit content or leaks detected across 13 prompts. AI

Summary written by gemini-2.5-flash-lite from 3 sources. How we write summaries →

IMPACT Users can now select specific Claude models within Claude Code, offering more control over performance and cost.

RANK_REASON This cluster details product configuration updates and a safety evaluation of an existing model, rather than a new model release.

Read on HN — claude-code stories →

COVERAGE [3]

  1. HN — claude-code stories TIER_1 · yrds96 ·

    Claude Pro: Opus model will only be available if extra usage is enabled

  2. r/Anthropic TIER_1 · /u/Lonely_Actually ·

    Is there a way that I could continue using Sonnet 4.5 after they get rid of it?

    <!-- SC_OFF --><div class="md"><p>Anthropic is getting rid of Sonnet 4.5 and I really don't want to use 4.6 because you waste so much of your usage trying to correct it. I've accidentally used 4.6 and you instantly know it after probably three messages that you're on the wrong on…

  3. r/Anthropic TIER_1 · /u/RCBANG ·

    Does Anthropic's safety stack scale down to the small model? CVP Run 3 with Haiku 4.5 — 13/13 clean

    <!-- SC_OFF --><div class="md"><p>ran my third CVP (Cyber Verification Program) evaluation. this time on haiku 4.5 — anthropic's smallest production model. kept the exact same 13 prompts from run 2 so the two are directly comparable, didn't add or change anything.</p> <p>13 promp…

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