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AI Agent Roundup — October 31, 2026

AI Agent Roundup — October 31, 2026

By BytesAgain · Published October 31, 2026 ·

Here are today's most interesting finds from across the AI agent ecosystem.

1. Meet TokenEconomizer: Microsoft’s Plugin That Cuts Coding Agent Costs by Up to 30.9%

Microsoft Research and UC Berkeley released TokenEconomizer, an open-source plugin that learns from past sessions to cut coding agent token costs by 18.4% to 30.9% on SWE-Bench, with no change to the

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2. AI Security Agents Compared: Claude, Codex, Mantis, Cloudflare

Anthropic, OpenAI, Cloudflare and Google each released an AI agent that hunts security bugs in source code. All 4 use the same find, disprove, then patch loop. Here is how they differ, plus 12 more to

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3. Anthropic just removed one of Claude’s biggest usage limits — but not for everyone

Claude Code users on Anthropic’s $200 plan will no longer face a rolling five-hour usage cap, provided their accounts are The post Anthropic just removed one of Claude’s biggest usage limits — b

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