Anthropic's SDK update (1.3.0) hints at new models like 'experimental-claude-tag-2026-10-2

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Oct 24, 2026 00:49 UTC npm+pypi @anthropic-ai/sdk

Anthropic's SDK update (1.3.0) hints at new models like 'experimental-claude-tag-2026-10-21' and 'claude-haiku-4-5', alongside a slew of new API endpoints suggesting agent, deployment, memory, and environment management features.

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anthropic's latest sdk update has a bunch of new internal endpoints for 'agents', 'deployments', and 'memory stores'. looks like more managed offerings might be coming soon.

new model IDs like 'experimental-claude-tag-2026-10-21' and 'claude-haiku-4-5' just popped up in anthropic's sdk. could we be seeing new claude versions or features soon?

[MERGED across 2 sources: npm, pypi] shared signal: claude-haiku-4-5, claude-opus-4-8, claude-tag-2026-10-21 --- npm :: @anthropic-ai/sdk --- @anthropic-ai/sdk 1.2.0 -> 1.3.0: +1184 strings, -2508 strings, 135 flagged as interesting [model_id] (1) + experimental-claude-tag-2026-10-21 [feature_flag] (3) + experimental-claude-tag-2026-10-21 + slack_channel_enabled + ts * declare module '@anthropic-ai/sdk/internal/request-options' { * interface RequestOptions { * myContext?: string; * } * } * [endpoint] (92) + /v1/agents/${agentID} + /v1/agents/${agentID}/archive + /v1/agents/${agentID}/versions + /v1/deployment_runs/${deploymentRunID} + /v1/deployments/${deploymentID} + /v1/deployments/${deploymentID}/archive + /v1/deployments/${deploymentID}/pause + /v1/deployments/${deploymentID}/run + /v1/deployments/${deploymentID}/unpause + /v1/dreams/${dreamID} + /v1/dreams/${dreamID}/archive + /v1/dreams/${dreamID}/cancel + /v1/environments/${environmentID} + /v1/environments/${environmentID}/archive + /v1/environments/${environmentID}/work + /v1/environments/${environmentID}/work/poll + /v1/environments/${environmentID}/work/stats + /v1/environments/${environment_id}/work/${workID} + /v1/environments/${environment_id}/work/${workID}/ack + /v1/environments/${environment_id}/work/${workID}/heartbeat + /v1/environments/${environment_id}/work/${workID}/stop + /v1/memory_stores/${memoryStoreID} + /v1/memory_stores/${memoryStoreID}/archive + /v1/memory_stores/${memoryStoreID}/memories + /v1/memory_stores/${memoryStoreID}/memory_versions + /v1/memory_stores/${memory_store_id}/memories/${memoryID} + /v1/memory_stores/${memory_store_id}/memory_versions/${memoryVersionID} + /v1/memory_stores/${memory_store_id}/memory_versions/${memoryVersionID}/redact + /v1/organizations/claude_tag/bundles + /v1/organizations/claude_tag/bundles/${bundleID} + /v1/organizations/claude_tag/bundles/${bundleID}/targets