AI News
AI community posts, news and release updates
Latest updates
- Launch
Opus 5: Least Prompt-Injectable Model Yet, Attack Success Rate Near Zero with Layered Defenses
Published Jul 24, 2026Anthropic highlights Opus 5's excellence in coding, data analysis, design, biology, and knowledge work, but the most exciting aspect is its prompt injection resistance. According to the system card, Opus 5 is the hardest model to prompt inject yet. When layering strong alignment, injection probes, and Auto Mode in Claude Code, the success rate drops to nearly 0%.
- Anthropic
- safety
- Claude Opus 5
- Prompt Injection Defense
- Launch
Anthropic Launches Claude Opus 5: Fable 5-Level Performance at Half Price
Published Jul 24, 2026Anthropic releases Claude Opus 5, matching Fable 5 performance on coding and other tasks at half the cost, now available in Claude Code and Cursor.
- Anthropic
- AI模型
- 编程
- 价格
- Claude Opus 5
- Discussion
New Pareto Frontier: Grok 4.5, SWE-1.7, Opus 5 – Intelligence per Dollar Matters Most
Published Jul 24, 2026Discussing the new Pareto frontier in AI models, arguing that intelligence per dollar is the only metric that matters long-term, with Grok 4.5, SWE-1.7, and Opus 5 on the frontier.
- Opus 5
- Grok 4.5
- 帕累托前沿
- 智能每美元
- News
Claude Opus 5 Released: Near-Frontier Intelligence at Half Cost, Beats Fable 5 on Some Benchmarks
Published Jul 24, 2026Anthropic launches Claude Opus 5, near-frontier intelligence at roughly half the cost per task. It matches Fable 5 within 0.5% on CursorBench at half cost, beats Fable 5 on OSWorld at just over one-third cost, and scores 3x higher on ARC-AGI 3. Priced same as Opus 4.8, now default for Claude Max.
- Anthropic
- 定价
- 基准测试
- Fable 5
- Claude Opus 5
- Tutorial
What We Learned Removing ~80% of Claude Code's System Prompt: Writing Better Prompts, Skills, and Claude.MDs
Published Jul 24, 2026Anthropic shares insights from drastically simplifying the Claude Code system prompt for the newest models, offering practical advice on writing effective system prompts, defining skills, and structuring Claude.MD files.
- Claude Code
- Prompt Engineering
- CLAUDE.md
- system prompt
Anthropic releases Claude Opus 5, which surpasses its previous flagship Fable 5 on nearly all evaluation benchmarks, sparking excitement in the community.
- benchmark
- Fable 5
- Claude Opus 5
- Tutorial
Recreating Fall Guys with Same Prompt: Kimi K3 Beats Claude Opus 5.0 in Speed and Playability
Published Jul 24, 2026A developer used the same prompt to recreate Fall Guys with Kimi K3 and Claude Opus 5.0. Kimi K3 took ~9 min and $4.4, producing solid physics and gameplay. Opus 5.0 took ~17 min and $13+, with fancier UI but broken movement and lag. Kimi was far more playable.
- comparison
- game development
- Kimi K3
- Claude Opus 5.0
- Launch
Breaking: Anthropic Unveils Claude Opus 5, Near-Fable 5 Intelligence at Half the Price
Published Jul 24, 2026Anthropic officially launches Claude Opus 5, claiming it delivers intelligence close to Fable 5 at half the price, offering a more cost-effective option for developers.
- price
- Fable 5
- Claude Opus 5
- Idea
Open-Source and Frontier Labs Both Surge, but Opus Remains My Daily Driver
Published Jul 24, 2026The author acknowledges the rise of open-source models like Kimi and frontier progress from closed labs, supporting both. However, Claude Opus remains their daily driver for its thoughtfulness, capability, and unmatched style and personality, though they wish Anthropic invested more in frontend experience.
- open-source
- Claude Opus
- Kimi K3
- frontier progress
Artificial Analysis provides a comprehensive review of Claude Opus 5 across performance, pricing, and availability.
- analysis
- Claude Opus 5