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Claude

Anthropic's AI assistant with advanced conversation, document analysis, and a massive context window.

4.8

About Claude

Claude is Anthropic's AI assistant, built with a focus on safety, reasoning, and nuanced writing. Available in three model tiers — Haiku (fast/cheap), Sonnet (recommended default), and Opus (most capable) — with up to 200K tokens of context. Particularly strong on coding (consistently top of HumanEval and SWE-bench), careful analysis of long documents, and writing that doesn't sound AI-generated. Free tier on claude.ai includes Haiku; Pro ($20/month) unlocks Sonnet and Opus with higher limits. Best for: complex reasoning, code review, technical writing, and tasks where you need the AI to acknowledge uncertainty rather than confidently hallucinate.

Reviews (3)

Claude Opus 5 Review: The Smartest Model Anthropic Has Shipped — and the Most Annoying

4.3

Opus 5 tops the Artificial Analysis Intelligence Index at 61 and posted a near-4x jump on ARC-AGI-3, all at the same price as Opus 4.8. Then the reviewers who tested it called it 'brilliant but annoying': it argues with instructions, stops early, does unrequested refactors, and breaks prompt scaffolding tuned for Opus 4.8. One more finding deserves attention — a reported jump in its hallucination rate.

Pros:

+Ranked first on the Artificial Analysis Intelligence Index at 61
+ARC-AGI-3 leap to 30.2% from a 7.8% prior best
+Within 0.5% of Fable 5 on CursorBench at half the cost

Cons:

-Argues with instructions and stops before finishing work
-Reported hallucination rate up 14 points to 50%
-Verbose by default — confirmed in Anthropic's own docs

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Claude Fable 5 Review: The Most Capable Public Model Yet — for a Premium

4.6

Anthropic's Claude Fable 5 is the most capable model the public can use today — topping SWE-Bench Pro and excelling at vision and long tasks. It is also the priciest major model and ships with hard safety guardrails. Our first-look verdict.

Pros:

+Best agentic-coding result to date (80.3 on SWE-Bench Pro)
+State-of-the-art vision plus stronger long-horizon autonomy
+Mythos-class capability finally available to everyone

Cons:

-Most expensive major model at $10 in / $50 out per million tokens
-Safety classifiers can block legitimate security research
-Mandatory 30-day retention even on zero-retention plans

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Claude Review (July 2026): Fable 5, Opus 4.8 & the New Sonnet 5

4.8

Anthropic's lineup leveled up: Fable 5 is the most capable public model, Opus 4.8 runs hundreds of parallel subagents, and Sonnet 5 is the new Pro default at a fraction of the cost. Where Claude leads, where it still struggles, and whether Pro/Max are worth it in mid-2026.

Pros: