Claude Sonnet 5 Launches at $2 per Million Tokens, Nearing Opus Performance
Anthropic released Claude Sonnet 5: near-Opus 4.8 performance at $2/$10 per million tokens until Aug 31, a native 1M-token context window, and default status in Claude Code.
Anthropic
Claude Sonnet 5 Launches: Closer to Opus, and Cheaper
Anthropic released Claude Sonnet 5 on June 30. It moves closer to Opus 4.8 on benchmarks while keeping the price flat or lower, and it’s already the default for Free and Pro users.
Claude Tag Lets You Mention @Claude in Slack Like a Teammate
Anthropic launched Claude Tag on June 23. Mention @Claude in a Slack channel and it splits work into steps and runs them async, like a teammate. Team and Enterprise beta.
Claude Code Now Falls Back to a Backup Model When Yours Is Overloaded
Claude Code’s Week 24 update adds fallbackModel — when your main model is overloaded, it automatically switches to a backup, with up to three models tried in order.
Claude Code Automation Usage Now Splits From Your Subscription
Starting June 15, programmatic Claude usage (Agent SDK, claude -p, GitHub Actions) draws from separate Agent SDK credits, not your Pro/Max subscription. Interactive use is unchanged.
The US Government Just Forced Anthropic to Shut Down Fable 5
On June 12, 2026, Anthropic disabled Fable 5 and Mythos 5 for all users — not by choice, but on a US government export-control directive. The striking part isn’t the vulnerability; it’s that a government switched off a deployed commercial model.
Claude Code Now Shows Exactly Where Your Usage Goes
Claude Code 2.1.174 adds a usage attribution view that breaks down where your tokens go: cache misses, subagents, skills, plugins, and MCP. VS Code only for now.
Claude Code Subagents Can Now Spawn Their Own Subagents
Claude Code 2.1.172 lets subagents spawn their own subagents, nesting up to 5 levels deep. Here’s what changes for task delegation — and the token cost to watch out for.
Anthropic Launches Claude Fable 5: A New Tier Above Opus
Anthropic released Claude Fable 5, a Mythos-class model above Opus. Free in subscriptions until June 22, then usage credits. API runs $10/$50 per million tokens.
Opus 4.8’s Default 1M Context Window Is the Upgrade I Notice Most
A few days with Opus 4.8 in Claude Code. The benchmarks went up, but the default 1M context window is what actually changed my long sessions.