Which AI Map weeklyhttps://whichaimap.com/newsletter.html What changed in AI models, agents, MCP and tools, minus the hype. Claude Opus 5.5 and Sonnet 5.5 launch with price cutshttps://whichaimap.com/newsletter.html?issue=2026-09-29https://whichaimap.com/newsletter.html?issue=2026-09-29Tue, 29 Sep 2026 00:00:00 GMTAnthropic released new flagship models alongside broad industry price drops of forty to fifty percent. Meanwhile, AMD acquired World Labs and GitHub integrated the new models into Copilot.