Back to AI BriefingTechCrunch AISeptember 28, 2026Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partnerBy AI Tool Hub AnalystShare"Anthropic has released the newest version of its mid-range model, boasting faster response times and less token burn."Related readingTechCrunch AIOpenAI reportedly ditches model over safety concernsTechCrunch AISource: Inference provider Modal Labs closing in on $750M round at $15.75B valuationTechCrunch AIAMD will acquire Fei-Fei Li’s World Labs for $8.2 billionTechCrunch AIShopify opens checkout to browser-based AI agents