Claude Opus 4.8

Claude Opus 4.8 launched: code defect omission rate reduced to 25% of Opus 4.7’s, hallucination probability dropped to 10%; new Dynamic Workflows enable hundreds of sub-agents in parallel—Bun migration case produced 750K lines of Rust with 99.8% test pass rate.

Opus 4.8 scores 69.2% on Sweet Bench Pro—~5 pts above Opus 4.7, ~10 above GPT-4.5—but real-world coding reveals persistent ‘last 10%’ failures and hallucinations; pricing is steep at $5/k input tokens.

llm-anthropic 0.25.1 发布，新增 Claude Opus 4.8 模型及快速模式选项，优化默认最大输出令牌数。

Anthropic raised $65B in Series H at a $965B post-money valuation, with $47B annualized revenue; simultaneously launched Claude Opus 4.8 (fixing 4.7 issues, SOTA on economic benchmarks) and Dynamic Workflows (ultracode), enabling hundreds of parallel subagents for coding—demonstrated by rewriting 750k LOC of Bun in 6 days.

AI boosts white-collar productivity, sparking 4-day workweek proposals—but gains mostly captured by capital; YouTube auto-labels realistic AI videos; Opus 4.8 shows modest improvements, with community favoring GRAM-enhanced small models; LLM fact-checking remains inconsistent; Win10 can run SimCity 3000 at 4K.

Anthropic released Claude Opus 4.8, significantly improving performance: 69.2% on SWE-bench Pro (+5 pts vs 4.7), 2.5× faster inference (~250 tokens/sec), plus new dynamic workflows and long-horizon autonomy—all at the same price.

Claude Opus 4.8 introduces Ultra Code effort level and enhanced agents, enabling long-running sessions, hundreds of parallel sub-agents, output self-verification, and end-to-end codebase migrations across 100k+ lines; its ‘honesty’ manifests in disclosing limitations and hiding features like Ultra Code by default.

iOS 27 reveals dual-entry Siri with standalone app; Claude Opus 4.8 cuts fast-mode cost to one-third and reduces undetected code defects to 1/4 of Opus 4.7; HarmonyOS ecosystem exceeds 1.3 billion devices; DeepSeek suffered a 22-minute outage; Xiaomi ranks 7th globally in NEV sales, surpassing Volkswagen and Toyota.

Anthropic released Claude Opus 4.8, claiming improved judgment, self-honesty, and longer autonomous task duration over 4.7—at the same price; however, the author tested it for only ~10 minutes with no benchmarks or technical details, and the content is a live-stream transcript with low information density.