Introducing Claude 4
What happened
Anthropic has released Claude 4, comprising two new models: Claude Opus 4 and Claude Sonnet 4. Both models can use tools such as web search during extended thinking, can run tools in parallel, and can follow instructions more precisely. Claude Opus 4 is positioned as the world’s best coding model, with sustained performance on long-running tasks and strong results on coding benchmarks. Claude Sonnet 4 is an upgrade over Sonnet 3.7, offering improved coding and reasoning while remaining more efficient. The models are available on Anthropic’s API, Amazon Bedrock, and Google Cloud Vertex AI, with pricing similar to previous versions.
Why it matters
The new models could make coding and complex problem‑solving faster and more reliable for developers and businesses that rely on AI assistance. They also enable more advanced AI agents that can use tools and remember information across sessions.
Reality check
An automated, sceptical read of the sourceIncremental. The release builds on existing Claude models with added tool use and performance tweaks, but does not introduce fundamentally new technology.
Is this a big deal?
Get stories like this every morning
The day's AI news in plain English, in your inbox at 8:30 IST. Free.
More from Anthropic
Anthropic Upgrades Claude Code Projects to Run Parallel AI Workers Hands-FreeAnthropic · 14 Nov 2026Claude designed FPGA scaler board for 6th-gen consolesAnthropic · 13 Nov 2026I asked Claude Fable 5.2 to turn my site into a 90s Silicon Graphics workstationAnthropic · 13 Nov 2026Anthropic is endorsing SB 53Anthropic · 13 Nov 2026Understanding and addressing AI harmsAnthropic · 13 Nov 2026This page was collected from anthropic.com and summarised automatically by AIPulsee's pipeline. See how it runs.