Anthropic

Anthropic has deprecated fast mode for Claude Opus 4.8 and will remove it on November 30, 2026. After removal, requests to claude-opus-4-8 with speed: "fast" will return an error.

To keep using fast mode, migrate to Claude Opus 5.5, which accepts speed: "fast" without a beta header. Check your other settings when moving: Opus 5.5 enables thinking when the thinking field is omitted and doesn't support Priority Tier.

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Anthropic's Usage and Cost Analytics API is in beta for Claude Console and Claude Enterprise organizations.

Use the analytics-usage-cost-2026-08-24 beta header to call /v1/organizations/analytics/usage and /v1/organizations/analytics/cost. You can filter and group token usage and cost by model, workspace, API key, and the user or service account behind each request.

The older Usage and Cost API and Enterprise usagereport, costreport, userusagereport, and usercostreport endpoints are now…

Anthropic raised the maximum request size for the Messages API and Token Counting API from 32 MB to 128 MB on the first-party Claude API. Partner-operated platforms set their own limits.

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Anthropic, the company behind Claude, filed an S-1 registration statement with the SEC for a proposed IPO of its Class A common stock. It plans to list on the Nasdaq Global Select Market under the symbol “ANT.”

The filing isn’t effective yet, so shares can’t be sold or offers accepted. The number of shares and price range haven’t been set.

Anthropic-managed Claude on Google Cloud is now generally available. You can access the full Claude Platform through your Google Cloud account, using Google Cloud IAM credentials and billing, without a separate Anthropic account. Usage can count toward existing Google Cloud commitments.

That includes the full Claude API, Claude Managed Agents, code execution, and Opus 5.5 fast mode. Anthropic says new features will be available as they launch.

You can access the Anthropic-operated Claude API through a Google Cloud project with Claude Models on Google Cloud (Anthropic managed). Google Cloud IAM controls access, Marketplace handles billing, and fast mode is available for Claude Opus 5.5.

Setup requires Marketplace purchase permissions, permission to enable project services, and the claude.admin role to open the Claude Console. It creates a separate Anthropic organization for the project.…

Claude API version 2026-10-21 is available, its first official version since 2023. Version 2023-06-01 isn't deprecated.

Anthropic plans to release API versions more often so developers can handle breaking changes before a new model requires them.

Anthropic released API version 2026-10-21, with new major SDK and ant CLI releases that send it by default.

The releases include Python SDK 2.0.0, TypeScript SDK 1.0.0, C SDK 13.0.0, Go SDK 2.0.0, Java SDK 3.0.0, PHP SDK 1.0.0, Ruby SDK 2.0.0 and ant CLI 2.0.0. They also contain breaking changes independent of the API version and switch from the MIT License to Apache 2.0.

User profiles now expose enforcementstatus and enforcementactions, so API customers can check whether Anthropic has…

Claude Enterprise’s inference hooks are out of beta. They route governed prompts through a security server run by your organization or vendor for an allow or deny verdict before the model runs.

Setup requires the organization:manage permission, held by Owner and Primary owner roles. The hooks don’t cover Claude Platform API organizations, Amazon Bedrock or Google Cloud.

The server receives transcript text, tool calls and results, and text extracted from attachments.…

The Claude Tag API is in beta for Claude Enterprise organizations. You can read and change Slack channel and workspace settings, see which settings apply in a channel and where they come from, and attach Access bundles.

Requests need the experimental-claude-tag-2026-10-21 beta header and an Admin API key created by your primary owner in claude.ai, with the read:claudetag or write:claudetag scope. Claude Platform (Claude Console) organizations aren’t supported.

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