Anthropic Releases Claude 4 Model Family With Extended Context Windows
Anthropic announced the release of the Claude 4 model family yesterday, featuring context windows of up to one million tokens. The new models include Claude Opus 4, described by the company as their most capable model to date, alongside Sonnet 4 and Haiku 4 variants.
The Opus variant demonstrates improved performance on coding benchmarks, achieving 72.5% on SWE-bench, according to internal evaluations published alongside the release. The models are available immediately through Anthropic's API and partner platforms.
Industry analysts note this continues the trend of rapidly expanding context capabilities, with practical applications in document analysis and codebase reasoning.