Claude Fable 5 has arrived, promising a major leap in AI performance. Here’s what makes it powerful, how it compares, and why it matters.
AIニュース

Meet Claude Fable 5, Anthropic’s New Mythos-Class Model

On June 9, 2026, Anthropic released Claude Fable 5, the first model in a brand new top tier the company calls the Mythos class. This is not another point upgrade in the Opus line. Anthropic describes Fable 5 as a model that sits above Opus in raw capability. It is state of the art on nearly every benchmark it was tested on, and it is the most powerful model the company has ever made available to the general public. It launched alongside a sibling model, Claude Mythos 5. That model is the same underlying system with the safety guardrails lifted, available only to a small set of vetted users. Fable […]

Flat vector illustration on an orange background showing a sequence of small robots working left to right—thinking at a laptop, writing, reviewing a document with a magnifying glass, and confirming with a checkmark—under the headline “Claude Opus 4.7” and the caption “It Can Check Its Own Work.”
AIニュース

Anthropic’s Claude Opus 4.7 Just Released: Everything You Need to Know

On April 16, 2026, Anthropic released Claude Opus 4.7, its most capable generally available model to date. The update brings a 13% lift on coding benchmarks, 3x more production tasks resolved, high-resolution vision support up to 3.75 megapixels, and a new tokenizer. Pricing stays the same as Opus 4.6 at $5/$25 per million tokens. Claude Opus 4.7 is available now across the Claude API, Amazon Bedrock, Google Cloud Vertex AI, and Microsoft Foundry. It replaces Opus 4.6 as the default Opus model. What Changed in Opus 4.7 Opus 4.7 is not a new model tier. It is a direct upgrade to Opus 4.6, continuing Anthropic’s roughly two-month release cadence (Opus […]

Claude Opus 4.6 brings AI multi-agent coding. Learn what’s new, how it works, key benchmarks, real use cases, and why it matters for developers and teams.
AIテクニカルインサイト

Claude Opus 4.6: Full Breakdown of Anthropic’s New AI Model with 1M Context Window

On February 5, 2026, Anthropic released Claude Opus 4.6 — the latest and most capable model in its Claude lineup. Arriving just three months after Opus 4.5, this release brings a 1-million-token context window to the Opus family for the first time, introduces collaborative agent teams in Claude Code, and delivers benchmark results that put it ahead of GPT-5.2 and Gemini 3 Pro across most evaluations. But the headline number that caught the industry’s attention wasn’t a benchmark score. It was 500 — the number of previously unknown security vulnerabilities Opus 4.6 discovered in open-source code during pre-release testing, with little to no human prompting. This article breaks down everything […]

Illustration of a man presenting a friendly robot, with the text ‘Claude Opus 4.5 – Here Is All You Need To Know’ on an orange background.
AIニュース

Anthropic launched Claude Opus 4.5: Faster, Cheaper, and Crazy Good at Coding

November 24, 2025. Anthropic has officially launched Claude Opus 4.5, a major refresh of its top-tier model and the company’s strongest push yet in the fight for AI leadership. Coming just days after Google’s Gemini 3 debut, the new Opus arrives with a sharp focus on professional coding, long-running agents, and desk-work automation—and Anthropic is backing the launch with aggressive pricing and hard benchmark data. The company says Opus 4.5 is now the leading model for real-world software engineering, slide and spreadsheet editing, and multi-step agentic workflows. Early numbers support the claim, with the model showing large performance gains across enterprise tasks. And in a move aimed at accelerating adoption, Anthropic has cut Opus […]