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

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

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 has expanded Claude Sonnet 4’s context window to 1 million tokens, matching OpenAI’s GPT-4.1 and enhancing its ability to process large code bases and document sets in one request.

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

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

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

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

Claude Sonnet 4 is a more affordable and efficiency-focused model that’s better suited to general tasks, which supersedes the 3.7 Sonnet model released in February. Anthropic says Sonnet 4 ...

Anthropic announced Claude Opus 4 and Claude Sonnet 4 on Thursday, touting the advanced ability of the models to “analyze thousands of data sources, execute long-running tasks, write human ...

Claude Sonnet 4 is the smaller model, but it's still a major upgrade in power from the earlier Sonnet 3.7. Anthropic claims Sonnet 4 is much better at following instructions and coding.

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