Claude Sonnet 4.5 (latest)

Snowflake's official blog post dated September 29, 2025 announces Anthropic Claude Sonnet 4.5 as available on Snowflake Cortex AI in public preview with same-day launch availability through the multi-year Anthropic–Snowflake partnership. The post explicitly names the exact model variant Claude Sonnet 4.5, attributes creation to Anthropic, and lists availability surfaces including Cortex AISQL and Cortex REST API, with Cortex Agents and Snowflake Intelligence noted as coming soon. It describes upgrades over Claude Sonnet 4 spanning enhanced domain knowledge in finance, research, and cybersecurity, superior agentic capabilities with improved sub-agent coordination for multi-step workflows, and state-of-the-art coding with a higher SWE-bench Verified score plus more reliable computer-use behavior for clicking, form-filling, and error recovery. The announcement positions Sonnet 4.5 as suited to enterprise use cases within Snowflake's secure, governed environment, enabling data-to-actionable-intelligence transformations alongside other frontier models on Cortex AI. No pricing, regional availability, or API rate-limit details are provided in the excerpt. As a first-party on-subject source naming the exact model version and the exact serving surface, this is the strongest available evidence for Claude Sonnet 4.5 on Snowflake Cortex despite being approximately 11 months old relative to the current date and lacking independent corroboration of the capability claims.

A multilingual daily AI newsletter dated October 3-4, 2025 mentions Anthropic's Claude Sonnet 4.5 as one bullet in a broad industry roundup, describing it as the latest model capable of 30 hours of autonomous work, alongside unrelated items including OpenAI's Samsung/SK Hynix Stargate partnership, Google Gemini for Home, Microsoft 365 Premium, and Perplexity's Comet browser going free. The item adds no Snowflake Cortex-specific availability, API, pricing, or benchmark detail. As auto-translated secondary aggregator coverage of the broader Claude Sonnet 4.5 launch, it is duplicate of better-supported announcements and provides no incremental technical evidence for this subject. No Cortex-specific inference, routing, or pricing claims are supported by this excerpt beyond the general launch framing, and the unverified 30-hour autonomous-work figure is not corroborated by any other candidate. The candidate therefore remains low-value on-subject and should not be treated as the primary source for Sonnet 4.5 on Cortex. The primary on-subject evidence for this subject comes from Snowflake's own first-party announcement rather than from this aggregator roundup.