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

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

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.

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 ...

Dan Shipper in Vibe Check Was 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.

The model’s usage share on AI marketplace OpenRouter hit 20 per cent as of mid-August, behind only Anthropic’s coding model.

According to Anthropic, Claude Sonnet 4 is a significant upgrade to Claude Sonnet 3.7, offering improved coding and reasoning along with the ability to respond to instructions more precisely.

Sonnet 4 is a faster, more efficient model for everyday tasks. Both models boast an impressive memory, understanding hundreds of pages of text, which helps them follow long, complicated instructions.

Free users of Claude can only access the new Sonnet 4 model. However, Pro, Max, Team, and Enterprise Claude plan users can access both models and extended thinking.