opus 5
30 articles about opus 5 in AI news
Claude Opus 5 Is Now in Claude Code: How to Use Fast Mode and Save 50% on Tokens
Claude Opus 5 is now in Claude Code with Fast Mode (2.5x speed) at Opus 4.8 pricing. Run `claude code --model opus-5` to start saving 50% on tokens immediately.
Anthropic's Opus 5 and OpenAI's 'Spud' Rumored as Major AI Leaps, Prompting Security Concerns
A Fortune report, cited on social media, claims Anthropic's upcoming Opus 5 model is a 'massive leap' from Claude 3.5 Sonnet, posing significant security risks. OpenAI is also rumored to have a similarly advanced model, 'Spud,' in development.
Traders Bet Claude Opus 4.8 Launch Imminent as Options Spike
Traders bet Anthropic will launch Claude Opus 4.8 within days, based on options market activity. The model would succeed Opus 4.7 (69.2% SWE-bench Pro) and compete with GPT-5.
Claude Opus 4.8 Now Beats Gemini Pro 5 in Coding Benchmarks — What It
Claude Opus 4.8 beats Gemini Pro 5 by 11 points on Fable 5. Claude Code users should run `claude code --model opus-4.8` for complex coding tasks.
Databricks Defaults to Chinese Model GLM 5.2, Matches Opus at $1.28/Task
Databricks defaulted to GLM 5.2 after it matched Opus 4.8 at $1.28/task vs $1.94. The move signals enterprises building custom benchmarks and multi-vendor AI stacks.
Anthropic Claims Claude Opus 4.7 Hits 92% Honesty, Cuts Sycophancy
Anthropic's Claude Opus 4.7 scores 92% on internal honesty benchmark, reducing sycophancy. The model also improves SWE-Bench to 79.8, up from 71.2.
Claude Sonnet 5 Beats Opus 4.8 on Knowledge Work at Lower Cost
Anthropic released Claude Sonnet 5, which beats Sonnet 4.6 across all benchmarks and edges past Opus 4.8 on GDPval-AA v2 with a score of 1,618.
GLM-5.2 matches Opus 4.7 at 1/5 the price in Snowflake coding test
Zhipu AI's GLM-5.2 matched Claude Opus 4.7 on a Snowflake coding benchmark at one-fifth the cost, threatening Western AI lab pricing and IPO valuations.
WorkBench Revisited: Claude Opus 4.8 Hits 89% Task Completion
Claude Opus 4.8 completes 89% of WorkBench tasks with 2.5% harm rate, up from GPT-4's 43% and 26% in 2024, showing capability and safety align.
Fable 5: Claude's Biggest Leap Since Opus 4.5, Says Beta Tester
Beta tester says Fable 5 is Claude's biggest leap since Opus 4.5, with emergent debugging and design capabilities.
Anthropic Releases Claude Mythos Publicly as 'Fable' at 2x Opus Price
Anthropic released Claude Mythos publicly as 'Fable' at 2x Opus pricing, targeting agent workflows with strong safety limits.
Claude Opus 4.7 Matches Dedicated NMR Software on Chemistry Tasks
Claude Opus 4.7 matches NMR software on chemistry tasks per Anthropic blog, but methodology and benchmarks undisclosed.
Claude Opus 4.8 Launches Dynamic Workflows for Agentic Code
Claude Opus 4.8 launched with dynamic workflows for Claude Code, enabling multi-step agentic coding. The release addresses quality issues after a ~25% instruction miss rate post-4.6.
Anthropic Opus 4.8 Cuts Bug-Finding Cost by 5x, SemiAnalysis Finds
Anthropic's Opus 4.8 + ultracode mode cuts severe bug-finding cost to ~1/5, per preliminary SemiAnalysis experiments with wide error bars.
Claude Opus 4.8: 2.5x Faster, 3x Cheaper Fast Mode
Anthropic released Claude Opus 4.8 with 2.5x faster, 3x cheaper fast mode and a new dynamic workflows feature, undercutting GPT-4 Turbo on price.
Opus 4.8 Builds Full RPG in Claude Code With Zero Feedback
Opus 4.8 autonomously built and deployed a complete RPG via Claude Code with zero human feedback, per @emollick's demonstration.
Anthropic Opus 4.8 Spotted on Google Vertex, Sonnet 4.8 Coming Soon
Opus 4.8 spotted on Vertex AI. Unconfirmed but plausible given GPT-5.5 pressure. Watch for official confirmation.
Cursor's Composer 2.5 matches Opus 4.7, GPT-5.5 at fraction of cost
Cursor's Composer 2.5 scores 79.8% on SWE-Bench Multilingual at $0.50/M tokens, matching Opus 4.7 and GPT-5.5 at 30x lower cost.
Anthropic Ships Claude Opus 4.7: 80.1 SWE-Bench, 1M Context
Anthropic released Claude Opus 4.7 on April 16, 2026, scoring 80.1 on SWE-Bench Verified, a slight regression from Opus 4.6's 80.3. The release prioritizes safety tuning over benchmark leadership.
Opus 4.7 Prompt Surgery: 20K-Char Cut Per Coding Turn
Lobotomized Claude Code cuts 20K characters per coding turn from Opus 4.7's prompt, removing overfitted CAPS directives and anti-laziness scaffolding that harm the newer model.
Claude Code quota proxy exposes unified Opus/Sonnet pool
A developer's proxy makes Claude Code usage-aware by intercepting hidden rate limit headers. Sonnet and Opus share one quota pool despite separate UI bars.
Anthropic Ships Claude Opus 4.7: 2.1% SWE-Bench Gain Over 4.6
Anthropic released Claude Opus 4.7 with a 2.1-point SWE-Bench gain to 82.9, the smallest jump between Opus versions yet, signaling diminishing returns.
Claude Opus 4.7 Builds AlphaZero-Style Self-Play on Consumer Hardware
Claude Opus 4.7 built AlphaZero self-play from scratch on consumer hardware in three hours, showing autonomous algorithmic code generation.
Xiaomi MiMo 2.5 Pro Beats Opus 4.5 on Arena, MIT License
Xiaomi's MiMo v2.5 Pro, an open-source model under MIT license, has achieved a higher Arena score than Opus 4.5, signaling a major shift in competitive AI performance.
ThermoQA Benchmark Reveals LLM Reasoning Gaps: Claude Opus Leads at 94.1%
Researchers released ThermoQA, a 293-question benchmark testing thermodynamic reasoning. Claude Opus 4.6 scored 94.1% overall, but models showed significant degradation on complex cycle analysis versus simple property lookups.
Anthropic Opus 4.7: 87.6% SWE-Bench, Constrained Cyber Capabilities
Anthropic released Claude Opus 4.7 on April 16, 2026, achieving 87.6% on SWE-Bench Verified and 64.3% on SWE-Bench Pro — leading GPT-5.4 and Gemini 3.1 Pro. The company also confirmed it deliberately constrained cybersecurity capabilities in Opus 4.7, with the more powerful Mythos Preview model (83.1% on CyberGym) restricted to select partners.
Moonshot AI Ships Trillion-Parameter Open Model, Matches Claude Opus on Coding
Moonshot AI released a trillion-parameter open-source model that reportedly matches Anthropic's Claude Opus on most coding benchmarks. This follows the same day Anthropic committed $25B to AWS for compute, highlighting divergent AI scaling strategies.
Opus 4.6 Is Gone from Claude Code: What Developers Should Do Now
Claude Code users must now work with Opus 4.7 exclusively, as 4.6 has been silently removed, impacting cost and workflow decisions.
Opus 4.7's Tokenizer Change: How to Measure Your Real Claude Code Costs
Claude Opus 4.7's updated tokenizer means the same input can cost 40%+ more than 4.6. Use the Claude Token Counter to measure real costs before upgrading.
Omar Sar Uses Opus 4.7 Agent to Turn Podcasts into Self-Improving Wikis
AI researcher Omar Sar automated podcast consumption using an Opus 4.7 agent that extracts insights, generates analysis, and builds interactive HTML/JS artifacts. The system creates a self-improving knowledge wiki for agentic research workflows.