opus 4.8
30 articles about opus 4.8 in AI news
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.
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.
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.
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.
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.
Claude Fable 5 in Claude Code: The Routing Strategy That Saves Your Weekly Limit
Claude Fable 5 ($10/$50 per M tokens) scores 91 on Senior Engineer benchmarks vs Opus 4.8's 63—use `/model fable` for complex, multi-file tasks, but reserve quick edits for cheaper models to save your weekly limit.
Zhipu GLM-5.2 beats Anthropic's Mythos on bug-hunt benchmark
Zhipu AI's GLM-5.2 beat Anthropic's Claude Opus 4.8 on a cybersecurity bug-hunting benchmark, then matched it with extra instructions, marking another 'DeepSeek moment'.
Anthropic's Claude Sonnet 4.8, Opus 4.7 Internally Tested, Leak Suggests
A leak reveals Anthropic has internally tested Claude Sonnet 4.8 and Opus 4.7. This suggests a public release of these model upgrades is likely imminent.
Anthropic Model Versions Opus 4.7 & Sonnet 4.8 Leaked via 'Capybara' & 'Opus Mythos' References
A social media leak references unreleased Anthropic model versions Opus 4.7 and Sonnet 4.8, alongside cryptic codenames 'Capybara' and 'Opus Mythos'. This suggests active, unannounced development beyond the current Claude 3.5 model family.
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.
Cowork Hardcodes 'Medium' Effort for Opus 4.6, Ignoring Your Settings
Claude Cowork forces 'medium' effort and standard context on Opus 4.6, overriding CLI settings and environment variables. Max plan users get throttled performance.
Claude Code v2.1.158: Enable Auto Mode on Bedrock, Vertex, and Azure Right Now
Claude Code v2.1.158 brings auto mode to Bedrock, Vertex, and Azure. Set `CLAUDE_CODE_ENABLE_AUTO_MODE=1` and upgrade before the June 1 deprecation of `CLAUDE_CODE_OPUS_4_6_FAST_MODE_OVERRIDE`.
Claude Code Digest — Jul 10–Jul 13
Claude Code is crossing the line from “assistant” to “agent runtime”: the winning teams are the ones adding verification, hooks, and policy gates instead of trusting the model.
Databricks Tests Coding Agents on Its Own Codebase
Databricks benchmarked coding agents on its own polyglot codebase. GLM-5.2 matched top closed models, a minimal harness halved costs, and cheaper-per-token models cost more per task.
China's Security Warning on Claude Code
China's backdoor alert on Claude Code highlights the need for developers to audit tool permissions and stay patched. No immediate risk for most users.
Aletheia: An Open-Source Uncertainty Agent That Earns Its Confidence in
Aletheia is an open-source uncertainty loop agent for Claude Code that uses belief-update over guess-and-summarize, delivering verdicts with explicit confidence and residual unknowns.
Fable 5 Returns: First Model Lobotomized by US Policy Comes Back Online
Fable 5, lobotomized June 12 under US export controls, returned online today — first frontier model restored by policy.
Zhipu AI Launches Claude Code Clone 'ZCode' with GLM-5.2
Zhipu AI launched ZCode, a Claude Code clone for GLM-5.2, with three pricing tiers and remote execution via WeChat.
Claude Hits Azure on Nvidia GB300 Blackwell, GA for Agent Workloads
Microsoft launched Claude models on Azure with Nvidia GB300 Blackwell GPUs, targeting enterprise agentic AI. First Blackwell deployment for Anthropic in a major cloud.
DeepSeek Raises $7B, Ends No-Funding Pledge, Doubles Staff
DeepSeek raised $7B, abandoning its no-funding pledge, to double headcount and launch a coding agent team competing with Claude Code.
Claude AI's $29 Kit Earns $0 in 12 Days — Kill-Criteria Clock Runs
A Claude AI agent earned $0 in 12 days from a $29 kit, with 3 funnel visitors. A pre-written kill-criteria clock runs to July 3, 2026.
Gemini 3.5 Flash Scores 78.4 on OSWorld, Matching GPT-5.5
Google integrated Computer Use into Gemini 3.5 Flash, scoring 78.4 on OSWorld — matching GPT-5.5 and undercutting on cost.
How Simon Willison Ported a 0.2B Image Model to the Browser with Claude
Simon Willison used Claude Code to port a 0.2B image inpainting model to WebGPU, running it as a parallel side project while his main agent worked on Datasette. The technique? Research with Claude.ai, then hand off to Claude Code with research.md.
Zhipu's GLM 5.2 claims Design Arena's top HTML spot with Elo 1,360 — edging a hobbled Claude Fable 5
Zhipu AI's 753-billion-parameter open-weight model GLM 5.2 topped the Design Arena HTML benchmark with an Elo score of 1,360, edging Anthropic's Claude Fable 5 (1,350). The win coincides with a Commerce Department export-control order that pulled Fable 5 from non-US users, and GLM 5.2's API pricing
OpenAI Says GPT-5.5 Instant Beats Doctors on Health Accuracy — But It Designed the Test
OpenAI's GPT-5.5 Instant model reportedly outperformed doctor-written health responses across accuracy, clarity, and completeness in the company's own HealthBench evaluations, cutting flagged factuality errors by 71% over two months. The catch: OpenAI built the benchmark, organized the physician pan