Access to Claude Fable 5 and Claude Mythos 5 is restored

UpdateJul 1, 2026VerifiedAdded Sep 22, 2026

Anthropic has restored access to Claude Fable 5 and Claude Mythos 5 and published a statement with more information.

LLMs

Read Anthropic's release notes

https://platform.claude.com/docs/en/release-notes/overview#july-1-2026

Summaries of vendors' own notes. Product names and logos belong to their owners; logos via logo.dev.

More Claude Platform releases

Claude PlatformJul 2, 2026

agent-memory-2026-07-22 beta header changes memory store listing behavior

With the new header, listing memories returns a stable server-defined order, depth accepts only 0 or 1, and path_prefix must end with / and match whole segments. Page cursors issued without the header are not valid with it.

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Claude PlatformJul 2, 2026

Claude SDKs switch memory store calls to the agent-memory-2026-07-22 header

Python 0.116.0, TypeScript 0.110.0, Go 1.56.0, Java 2.48.0, Ruby 1.55.0, PHP 0.36.0, C# 12.35.0 and CLI 1.16.0 send agent-memory-2026-07-22 on memory store calls. Code passing betas explicitly should replace managed-agents-2026-04-01.

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Claude PlatformJun 30, 2026

Claude Sonnet 5 launches with a 1M token context window at $2 / $10 per MTok

Claude Sonnet 5 supports a 1M token context, 128k max output and the same tools as Sonnet 4.6 except Priority Tier. Migrating teams should note that adaptive thinking is on by default and manual extended thinking changes.

GALLMsPricingSource

Claude PlatformJun 30, 2026

Claude Managed Agents session event streams support event deltas

Opt in with event_deltas[] on the session events stream to receive event_start and event_delta events that preview an agent message's text before the complete agent.message event arrives.

UpdateAI agentsLLMsSQLSource

Claude PlatformJun 30, 2026

Claude Managed Agents session listing adds backward pagination

GET /v1/sessions now returns a prev_page cursor alongside next_page, which can be passed as the page parameter to go back a page.

UpdateAI agentsLLMsDeveloper toolsSource

Claude PlatformJun 30, 2026

Claude Managed Agents sessions can override agent configuration

Passing agent with type agent_with_overrides replaces the model, system prompt, tools, MCP servers or skills for a single session without changing the agent itself.

UpdateAI agentsLLMsMCPSource

Claude PlatformJun 30, 2026

Claude Managed Agents vaults add injection_location for credentials

Environment variable credentials can now be substituted at egress into outbound request headers, the request body or both, controlled by the new injection_location setting.

UpdateAI agentsLLMsSource

Claude PlatformJun 30, 2026

Claude Managed Agents webhooks cover agent and deployment lifecycle events

New agent, deployment and deployment run webhook events let you react to a published agent version, a paused deployment or a failed scheduled run without polling.

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Also shipped on Jul 1, 2026

Fivetran FivetranJuly 2026

Fivetran Context Layer is in public preview

Context Layer builds a context layer from documentation sources, systems of record and analytical sources, then connects it to an organization's AI coding and chat tools.

PreviewDeveloper toolsSource

Fivetran Fivetran connectors and Connector SDKJuly 2026

Fivetran sunsets the AVEVA PI and Delighted connectors

New AVEVA PI and Delighted connections are blocked from July 1, 2026. Existing AVEVA PI connections stop syncing July 23, 2026, and Delighted connections are paused after the Delighted API deprecation.

DeprecationData integrationDeveloper toolsSource

Fivetran FivetranJuly 2026

Fivetran Move a Connection REST API endpoint enters beta

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BetaDeveloper toolsSource

Snowflake SnowflakeJul 1, 2026

Workload identity federation for Snowflake workloads that access external services (General availability)

Snowflake can now act as the OpenID Connect (OIDC) provider when Snowflake workloads authenticate to external services. To use this capability, create a secret of type WORKLOAD_IDENTITY_FEDERATION and share its issuer URL and subject identifier with the external service to establish trust.

GASecuritySource

Databricks LakeflowJul 1, 2026

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The Veeva Vault connector is now available in Lakeflow Connect in Beta . Workspace admins can control access to this feature from the Previews page. The connector uses Veeva's Direct Data API to ingest all standard objects, custom objects, system tables, and audit trail tables from your Vault instance into Databricks.

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Databricks LakeflowJul 1, 2026

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