Claude Opus 4.8 and Developer Controls #32
Today's Letter
Anthropic, Claude Opus 4.8 introduced
- Anthropic announced Claude Opus 4.8 on May 28, 2026 as an upgrade over Opus 4.7, available immediately at the same price.
- The release adds benchmark gains across coding, agentic work, reasoning, and knowledge tasks, with Anthropic positioning it as a stronger long-session collaborator.
- Anthropic said fast mode for Opus 4.8 runs at 2.5× speed and is three times cheaper than fast mode on previous models.
- claude.ai now includes effort control, letting users trade off deeper reasoning against faster responses and lower rate-limit usage across all plans.
- Claude Code adds dynamic workflows in research preview, allowing planning and execution with hundreds of parallel subagents in one session for larger codebase-scale tasks.
- Anthropic said Opus 4.8 is around four times less likely than its predecessor to let flaws in its own code pass without comment.
- The company also said alignment testing showed lower rates of deception or misuse cooperation than Opus 4.7, with results detailed in the Opus 4.8 System Card.
- The Messages API now accepts system entries inside the messages array, allowing mid-task instruction updates without breaking prompt caching.
Source: anthropic.com
More: digg.com
GitHub, GHAS Hard Budget Limits Added
- GitHub added hard budget limits for GitHub Advanced Security on May 28, 2026.
- Enterprise admins and billing managers can now cap GHAS license usage with an enforced limit.
- Earlier GHAS budgets were soft only, with email alerts at 75%, 90%, and 100% but no usage block.
- Once the hard limit is reached, new GHAS license assignments are blocked.
- GHAS is also not enabled on new repositories until the budget is raised or licenses are freed.
- The budget setup screen shows a real-time license-to-dollar monthly cost estimate.
- For existing customers, the minimum hard budget starts at the current billable license count.
- Budget controls are available in Billing settings under Budgets & alerts.
- Enterprises can scope budgets by cost center, and Team plan organizations can also set organization-level license budgets.
Source: github.blog
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