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各 AI プロバイダーのコーディングに関する最新ニュース。リリース、価格改定、提供終了を、あなたへの影響とともに要約します。

GitHub Copilot· コーディング

GitHub Copilot CLI 1.0.101 adds structured output for workflow subagents and an approval-guidance setting

GitHub Copilot CLI 1.0.101, dated October 20, 2026, per its release notes:Anthropic· コーディング

Claude Code 2.1.304 adds auto-mode setup, usage warnings and Code Review levels

Claude Code v2.1.304, released October 19, 2026, per its release notes:Anthropic· コーディング

Anthropic describes Scion, the in-house version control system it moved to from git

In an engineering post dated October 19, 2026, Anthropic says merges to its monorepo grew from about 2,500 to more than 30,000 a day, making source control the biggest development bottleneck. It says its team built Scion, an in-house version control system designed for always-online agents, and migrated off git in five months.GitHub Copilot· コーディング

GitHub Copilot CLI 1.0.100 adds a telemetry opt-out flag and sandbox changes

Copilot CLI 1.0.100, released October 19, 2026, per its release notes:コーディング

Security firm Norforge: exposed Cairn panels show AI agents hacking sites at scale

Norforge, a security firm, published findings on October 19 about publicly exposed control panels of Cairn, an open-source AI "problem-solving engine" that coordinates AI agents to probe and break into targets. The Verge's coverage, citing Norforge and Reuters, says one attacker used such agents to break into more than 100 websites with little human involvement. Both were shared on Hacker News.OpenAI· モデル· 2 件のディスカッション

OpenAI publishes "Advancing coding in low-resource programming languages"

OpenAI published a post on October 19, 2026 titled "Advancing coding in low-resource programming languages". Its summary says OpenAI is improving ChatGPT across low-resource programming languages, with new evaluations for software engineering, SQLite and COBOL migration. The description is OpenAI's own.アラートOpenCode Go· コーディング

OpenCode reports a security breach affecting 1.4% of Console users

OpenCode, the open-source coding agent, posted on X that it "had a security breach last night related to a large scale distillation attack" that affected 1.4% of OpenCode Console users. This is OpenCode's own account; it has given no further detail.OpenAI· コーディング

OpenAI Agents API: hosted sandboxes get the Artifact SDK, plus an Ultrafast mode

OpenAI's API changelog for October 16, 2026 (labelled v1/agents) lists two changes:OpenCode Go· コーディング

OpenCode v1.19.1 discontinues session sharing

OpenCode's v1.19.1 release notes list one change, under "Bugfixes": session sharing has been discontinued. According to the notes, existing share links and session-sharing commands are no longer available, and importing sessions from share URLs is unsupported.GitHub Copilot· コーディング

GitHub makes Copilot agentic autofix for code scanning alerts generally available

GitHub's changelog of October 15, 2026 says agentic autofix for code scanning alerts is generally available. When an alert is assigned to Copilot, it explores the codebase, proposes a fix, reruns CodeQL to check the alert closes, and opens a draft pull request with a summary and validation steps.GitHub Copilot· コーディング

GitHub Copilot weekly releases: Claude Haiku 5.5, local sandboxing GA

GitHub's weekly Copilot roundup, published October 9, 2026, lists:Anthropic· コーディング

Anthropic launches OSS Scanner, an opt-in vulnerability-finding service for open-source software

On Oct 8, 2026 Anthropic announced OSS Scanner, an opt-in vulnerability scanner for the open-source ecosystem. It says the tool is informed by its experience using Claude to find vulnerabilities during Project Glasswing. This is Anthropic's own account.Anthropic· モデル

Anthropic releases Claude Haiku 5.5, now the default Haiku on its API

Anthropic released Claude Haiku 5.5 (claude-haiku-5-5) on October 7, 2026, and it is now the default Haiku model on the Anthropic API. It has a 1M-token context window and costs $0.10 / $0.50 per million input / output tokens, or $0.50 / $2.50 for prompts over 100K tokens.