https://constructionaibrief.com/posts/2026-10-07-mistral-large-4-open-weights-construction-bid-data-private-model Construction AI Brief en 2026-10-07T00:00:00.000Z Mistral's 1-trillion-parameter model ships open weights Oct. 27. Here's what that means for a sub's bid data https://constructionaibrief.com/posts/2026-10-07-claude-haiku-5-5-price-cut-construction-high-volume-document-sorting Construction AI Brief en 2026-10-07T00:00:00.000Z Claude Haiku 5.5 cuts input prices 90%. Here's which high-volume document chores a GC can now afford to automate https://constructionaibrief.com/posts/2026-10-07-claude-google-sheets-docs-add-on-construction-bid-leveling-scope-sheets Construction AI Brief en 2026-10-07T00:00:00.000Z Claude now works inside Google Sheets and Docs. Here's what an estimator should test first https://constructionaibrief.com/posts/2026-10-06-sierra-meta-personal-agent-protocol-construction-warranty-service-requests Construction AI Brief en 2026-10-06T00:00:00.000Z Meta and Sierra want AI agents to file requests with businesses. Service and warranty desks are next https://constructionaibrief.com/posts/2026-10-06-openai-textgrain-watermark-construction-ai-drafted-documents-claims-records Construction AI Brief en 2026-10-06T00:00:00.000Z OpenAI will watermark ChatGPT text. Don't treat it as proof of who wrote a project document https://constructionaibrief.com/posts/2026-10-06-openai-astra-ultrafast-6x-price-construction-bid-day-estimating-agents Construction AI Brief en 2026-10-06T00:00:00.000Z OpenAI's Ultrafast mode runs Astra 8x faster at 6x the price. For estimators, speed only pays on bid day