Anthropic has upgraded Claude Sonnet 4 with a 1M token context window, competing with OpenAI's GPT-5 and Meta's Llama 4.

The company today revealed that Claude Sonnet 4 now supports up to 1 million tokens of context in the Anthropic API — a five-fold increase over the previous limit.

Claude Sonnet 4 can now support up to one million tokens of context, marking a fivefold increase from the prior 200,000, ...

Anthropic’s developers recently upgraded the AI model Claude Sonnet 4 to support up to 1 million tokens of context, thereby ...

To account for the extra computing power required for large requests, Anthropic will increase the cost for Claude Sonnet 4 ...

Anthropic upgrades Claude Sonnet 4 to a 1M token context window and adds memory, enabling full codebase analysis, long ...

Anthropic has expanded the capabilities of its Claude Sonnet 4 AI model to handle up to one million tokens of context, five ...

Anthropic AI has increased the context window for their Claude Sonnet 4 model to 1 million tokens, which is 5 times more than ...

Dan Shipperin Vibe CheckWas this newsletter forwarded to you? Sign up to get it in your inbox.Today, Anthropic is releasing a version of Claude Sonnet 4 that has a 1-million token context window. That ...

Claude Sonnet 4 has impressed companies like GitHub, Manus, iGent, Sourcegraph, and Augment Code with its impressive capabilities. It excels in following complex instructions, autonomous app ...

Claude 4, especially in its Sonnet form, stands out for its natural, thoughtful tone. It often feels more like a helpful assistant offering clear explanations, thoughtful suggestions and a calm ...