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Anthropic updates Claude Haiku 5.5, fixes Claude Code permissions, and upgrades Codex model

By PulseAugur Editorial · [1 sources] ·

Anthropic has updated its Claude Haiku model to version 5.5, making it the default on the Anthropic API with a 1 million token context window. While short prompts are now significantly cheaper, longer prompts incur a higher cost. Additionally, Claude Code has implemented several fixes for permission rules, addressing issues with sandbox auto-allow, deny rules for symlinked files, and security bypasses for network file reads. The Codex tool has also updated its default model to GPT-6.1 Sol and requires explicit opt-in for its Daybreak feature. AI

IMPACT Updates to Claude Haiku 5.5 improve cost-efficiency for short prompts and increase context window, while Claude Code fixes enhance security and reliability for developers.

RANK_REASON This cluster details updates and fixes for existing tools (Claude Code, Codex) and a model update (Claude Haiku 5.5) rather than a novel frontier release.

Read on dev.to — Claude Code tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Anthropic updates Claude Haiku 5.5, fixes Claude Code permissions, and upgrades Codex model

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This cluster details updates and fixes for existing tools (Claude Code, Codex) and a model update (Claude Haiku 5.5) rather than a novel frontier release.
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Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
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model release, product
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COVERAGE [1]

  1. dev.to — Claude Code tag TIER_1 English(EN) · aicoding-guide ·

    This week in Claude Code, Codex and Gemini CLI (week of October 11, 2026)

    <p><em>Originally published at <a href="https://aicoding-guide.com/en/posts/weekly-2026-10-11/" rel="noopener noreferrer">https://aicoding-guide.com</a>.</em></p> <p>The change with the widest reach this week is <strong>Claude Haiku 5.5</strong>. It is now the default Haiku model…

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