Anthropic rolled out OpenTelemetry tracing across its Claude Platform in public beta on October 14, 2026, covering Claude Managed Agents, the Messages API, and the Claude SDK. The spans follow OpenTel…
Anthropic's published rate card lists Opus at $4 per million input tokens and Haiku at $1, but swapping an agent between the two models typically cuts a tool-heavy agent's bill by far less than the ex…
A developer outlined a pattern for handling Claude's Message Batches API results, stressing that each request needs a custom_id from the caller's own records and that the four result states — succeede…
A new migration test harness for Claude Sonnet 5.5 is designed to catch thinking-block failures before production, since the release changes how thinking is enabled, how its blocks travel through a to…
Anthropic shipped four runtime controls to Claude Managed Agents in late August and early September 2026, including a hard per-session budget cap denominated in whole cents that pauses a session with …
Anthropic cut Fable 5.1's cache read price to $0.25 per million tokens — a quarter of Fable 5's $1 per MTok and half of Opus 5's $0.50 per MTok — extending the break-even for keeping a prompt cache wa…
Anthropic released a reference blueprint, "Commerce Agents," for building shopping and merchant agents on its Claude platform, featuring two fictional agents (a shopping agent for customers and a merc…
Anthropic's Claude Fable 5.1 API now rejects requests when prior conversation turns are modified, unless the `prefix_mismatch_behavior` is set to `"drop_block"`, a change enforced by default for new a…
Anthropic shut down the legacy Claude Workbench and three experimental API endpoints on August 17, 2026, breaking applications that used them and deleting unexported prompts. The retired endpoints—/v1…
Anthropic's Claude Messages API implements tool use as two content block types and a developer-written loop, not a special mode. The protocol requires echoing tool_use IDs in tool_result blocks, suppo…
Anthropic will retire its legacy Workbench and three experimental prompt API endpoints on August 17, 2026, with saved prompts, eval test cases, and variables not migrating to the new Workbench. The en…
A developer compares the OpenAI and Anthropic APIs for production SaaS features, arguing that API design—not model benchmarks—determines long-term maintainability and cost. The analysis highlights dif…
Anthropic released a guide for developers to get started with the Claude API in Python, covering installation, first API calls, response handling, and streaming. The guide uses the official Python SDK…
Anthropic's Claude models are now generally available in Microsoft Foundry on Azure, offering Claude Opus 4.8 and Haiku 4.5 with features like prompt caching and extended thinking. The integration pro…
Anthropic announced higher rate limits on the Claude API, including increased monthly spend caps across usage tiers—Start ($500), Build ($1,000), and Scale ($200,000)—and clarified that only uncached …
A developer building with the Anthropic API discovered that LLMs have no inherent memory; context is managed by appending all previous messages to an array sent with each request. By using raw fetch i…
Nylas introduced Agent Accounts, a hosted mailbox with six system folders that provides an immutable audit trail for email agents. The sent folder stores every outbound message as a real object, times…
Anthropic will retire Claude Sonnet 4 and Opus 4 model IDs on June 15, requiring users to migrate to newer versions. Claude Sonnet 4.8 launches June 16-18 with dynamic workflows and effort control, fe…
Anthropic released Claude Opus 4.8 on May 28, 2026, the eleventh major version in its Claude lineage, achieving a 69.2% score on SWE-bench Pro and introducing Dynamic Workflows for orchestrating hundr…