11 November 2026, in four lines
● Google undercut Anthropic by 4x — Gemini 4 Carbon went generally available at $2 / $10 per million, against Fable 5.2 at $8 / $40.
● Claude became a workspace — Whiteboards and Sheets in beta, Dashboards generally available as Claude Data.
● ChatGPT opened up to businesses — Claim a profile, see your mention and click data, publish an agent.
● xAI rebuilt its stack in C — Grok 4.8 finished pre-training and entered reinforcement learning.
Four announcements in a single day, three of them from the week’s two biggest rivals trading blows. Each story below is covered in full on its own page.
Google made Gemini 4 Carbon generally available, at a quarter of Claude’s price
Carbon opened on the paid API tier on 10 November at $2 per million input and $10 output through 30 November, rising to $4 and $20 in December. Claude Fable 5.2, launched a day earlier, is $8 and $40. Carbon leads Zapier AutomationBench and Terminal-Bench 4.0; Fable keeps FrontierCode, FrontierSWE and scientific research. Full story, prices and benchmark table.
Anthropic turned Claude into a workspace
Claude Whiteboards and Claude Sheets arrived in beta, and Claude Dashboards became generally available as Claude Data. All on paid plans, but Enterprise has Whiteboards and Sheets off until an admin enables them and Claude Data switches on by itself on 19 November. Anthropic calls Sheets “currently basic” in its own announcement. What each one does, and who gets it.
OpenAI will now show businesses how often ChatGPT mentions them
Businesses in ChatGPT opened in beta: claim a profile in Business Hub, get aggregated data on mentions, website clicks and conversation topics, and after verification publish a Business Agent with live product feeds. Businesses never see customer conversations. What it gives you and what the limits are.
xAI dropped JAX and rewrote Grok’s stack in C
Musk confirmed Grok 4.8 pre-training is complete and the model is in reinforcement learning, after the team replaced JAX and SGLang with a hand-written C and C++ stack. Asked about Claude Opus 5.5, he said Grok 4.8 is not as good and called the Anthropic model a masterpiece. The full update.
Also worth knowing
- Google announced two more TPUs on 9 November — TPU 8tx for confidential inference, at up to 2x lower latency than TPU 8t, and TPU 8i Max, which puts two 8i chips on one package for double the compute, SRAM and HBM bandwidth. That makes four eighth-generation TPU systems in one year, a first for Google.
- Two pricing deadlines on 30 November. Gemini 4 Carbon’s introductory rate ends, and Gemini 4 Argon doubles from $2 / $10 to $4 / $20 on 1 December.
Today’s comparisons