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Claude AI

Claude — You can now set a budget on a Claude Managed Agents session: a hard cap on the session's s

You can now set a budget on a Claude Managed Agents session: a hard cap on the session's spend, priced at public list rates. A session that reaches its budget pauses with the budget_reached stop reason instead of starting new model requests; changing or removing the budget resumes it. Deployments accept the same budget and apply it to each session they start. See Session budgets. You can now give…

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Claude AI

Claude — Inference hooks are now in beta for Claude Enterprise organizations. Point Claude at your

Inference hooks are now in beta for Claude Enterprise organizations. Point Claude at your organization's AI security server, and each governed prompt across claude.ai, Cowork, and Claude Code is held for the server's allow or deny verdict before inference proceeds. Requests are signed, failure handling is configurable, and every denial is recorded in the compliance Activity Feed. See Inference hoo…

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Claude AI

Claude — We've launched Claude Opus 5 (claude-opus-5), a step-change improvement over Claude Opus 4

We've launched Claude Opus 5 (claude-opus-5), a step-change improvement over Claude Opus 4.8. Claude Opus 5 supports a 1M token context window (both the default and the maximum), 128k max output tokens, and thinking on by default, at $5 / $25 per MTok, the same pricing as Claude Opus 4.8. It's available on the Claude API, Claude in Amazon Bedrock, Claude on Google Cloud, and Claude in Microsoft Fo…

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Claude AI

Claude — You can now set an effort level on a Claude Managed Agents agent's model configuration. Pa

You can now set an effort level on a Claude Managed Agents agent's model configuration. Pass effort inside the model object when you create the agent. See Effort levels for what each level does. Webhooks for Claude Managed Agents now cover the environment and memory store lifecycle: four environment.* event types and three memory_store.* event types. You can react to environment and memory store l…

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Claude AI

Claude — The legacy Workbench (platform.claude.com/workbench) in the Claude Console is being sunset

The legacy Workbench (platform.claude.com/workbench) in the Claude Console is being sunset with access ending on August 17, 2026. Saved prompts, variables, and evals are not supported in the updated Workbench. You can export any data you want to keep from the banner and under your Organizational Settings. For more, see How do I use the Workbench? in the Claude Help Center. The experimental prompt…

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Claude AI

Claude — You can now manage the people in your Claude Enterprise (claude.ai) organization with the

You can now manage the people in your Claude Enterprise (claude.ai) organization with the Admin API, in beta for all Claude Enterprise organizations: list members and look them up by email address, change a member's role, remove members, send and withdraw invites, manage groups and their membership, and read custom roles. Group and custom-role requests require the anthropic-beta: ce-user-managemen…

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Claude AI

Claude — Dreams (research preview) now supports Claude Fable 5 and Claude Sonnet 5. See Supported m

Dreams (research preview) now supports Claude Fable 5 and Claude Sonnet 5. See Supported models. We've expanded the Access Transparency documentation of cmek_preserve events with a filter example, an example event payload, and two preservation reason codes (policy_violation_investigation, csae_report). The documentation now also clarifies that a preservation event is written whether the preservati…

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Claude AI

Claude — We've added the agent-memory-2026-07-22 beta header, which changes how listing memories (G

We've added the agent-memory-2026-07-22 beta header, which changes how listing memories (GET /v1/memory_stores/{memory_store_id}/memories) behaves: results are returned in a stable, server-defined order and the order_by and order parameters are ignored; depth accepts only 0, 1, or being omitted (other values return a 400 error); and path_prefix must end with / and matches whole path segments inste…

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Claude AI

Claude — We've launched Claude Sonnet 5 (claude-sonnet-5), the next generation of our Sonnet model

We've launched Claude Sonnet 5 (claude-sonnet-5), the next generation of our Sonnet model family, at introductory pricing of $2 / $10 per MTok through August 31, 2026 (standard $3 / $15 thereafter). Claude Sonnet 5 supports a 1M token context window, 128k max output tokens, and the same set of tools and platform features as Claude Sonnet 4.6, except Priority Tier, which is not available on Claude…

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Claude AI

Claude — We've raised rate limits across the Claude API. Claude Sonnet and Claude Haiku rate limits

We've raised rate limits across the Claude API. Claude Sonnet and Claude Haiku rate limits now match Claude Opus at every usage tier, and usage tiers have been consolidated into three: Start, Build, and Scale. Most organizations move to a higher tier, no organization receives lower limits than before, and no action is required. You can view your tier and current limits in the Claude Console.

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Claude AI

Claude — The Python, TypeScript, Go, Java, Ruby, PHP, and C# SDKs now include support for code_exec

The Python, TypeScript, Go, Java, Ruby, PHP, and C# SDKs now include support for code_execution_20260120, the code execution tool version that adds REPL state persistence and is the minimum version for programmatic tool calling. To adopt it, set the tool's type to code_execution_20260120; no beta header is required. It's available on Claude Fable 5, Claude Mythos 5, Claude Opus 4.5 and newer, and…

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Claude AI

Claude — The code execution tool now supports code_execution_20260521, which discloses the 90-secon

The code execution tool now supports code_execution_20260521, which discloses the 90-second per-cell execution time limit in the tool description so Claude can budget long-running cells. No beta header is required. The web search tool and web fetch tool now support web_search_20260318 and web_fetch_20260318, adding a response_inclusion parameter to drop consumed result blocks from the API response…

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Claude AI

Claude — We've launched Claude Fable 5 (claude-fable-5), our most capable widely released model, al

We've launched Claude Fable 5 (claude-fable-5), our most capable widely released model, alongside Claude Mythos 5 (claude-mythos-5) for Project Glasswing participants. Both models support a 1M token context window by default, 128k max output tokens, and always-on adaptive thinking. See Introducing Claude Fable 5 and Claude Mythos 5 for capabilities, API changes, and availability. Claude Fable 5 an…

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Claude AI

Claude — The advisor tool now supports a max_tokens parameter to cap the advisor model's output per

The advisor tool now supports a max_tokens parameter to cap the advisor model's output per call, reducing latency and output token cost for workloads that don't need full-length advisor responses. Set tools[].max_tokens on the advisor tool definition; see Capping advisor output. On the Claude API, you are no longer billed for a request when it returns stop_reason: "refusal" without Claude having g…

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Claude AI v4.8

Claude — We've launched Claude Opus 4.8 (claude-opus-4-8), our most capable generally available mod

We've launched Claude Opus 4.8 (claude-opus-4-8), our most capable generally available model. Claude Opus 4.8 supports a 1M token context window by default on the Claude API, Amazon Bedrock, Google Cloud, and Microsoft Foundry, 128k max output tokens, and the same set of tools and platform features as Claude Opus 4.7. See What's new in Claude Opus 4.8 for capability improvements, new features, and…

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Claude AI

Claude — MCP tunnels is now available as a research preview, so you can connect to MCP servers in y

MCP tunnels is now available as a research preview, so you can connect to MCP servers in your private network. Self-hosted sandboxes are now available for Claude Managed Agents, as an alternative to running tool execution in Anthropic's infrastructure. See Self-hosted sandboxes. With Claude Managed Agents, you can now update the agent's MCP server and tool configurations associated with an active…