Anthropic Launches Claude Opus 4.8 With Sharply Lower Coding Error Rate and Dynamic Workflows
Anthropic positions its Claude Opus series as a high-end model for software development and agentic AI. For enterprises, the key question extends beyond benchmark scores to whether the model can reliably perform long-running tasks across multiple services. Opus 4.8 retains its predecessor’s pricing, lowering the barrier to upgrading, and targets engineering projects requiring extensive coordination, such as large-scale codebase migrations.
Anthropic released Claude Opus 4.8 on May 28, 2026, with its standard API priced at $5 per million input tokens and $25 per million output tokens. Official evaluations showed that the model was about one-quarter as likely as its predecessor to miss defects in code it had written. Claude Code also previewed Dynamic Workflows, which can run hundreds of subagents in parallel, and added an Effort control.
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The history behind this eventAnthropic Launches Claude Opus 4.7 and Reveals Mythos
Anthropic launched its flagship Claude Opus 4.7 model in July 2026, targeting complex software engineering, image understanding and enterprise agent tasks. The upgrade also highlights how Anthropic divides responsibilities across its models: its public products balance utility and safety, while its most advanced cybersecurity capabilities are reserved for Claude Mythos under controlled testing.
Claude Opus 4.7 offers three times the visual resolution of its predecessor, along with stronger coding, instruction-following and long-running task performance. It also provides a 1 million-token context window at no extra charge. Anthropic said existing prompts may need adjustment because of changes to the model’s default behavior. Mythos, revealed at the same time, is available for testing only by selected cybersecurity organizations; no public release schedule or pricing has been announced.
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