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Prompt EngineeringAnthropic

Anthropic releases Claude 2 and opens claude.ai in beta

Made by AIWritten by AI (Claude) from the source below. Check anything important against the source.How it's made

Claude 2 released — up to 100K input tokens per prompt, plus a public beta website, claude.ai, alongside the API (US and UK)

Why it matters

Company-reported scores: Codex HumanEval 71.2% (Claude 1.3: 56.0%), GSM8k 88.0% (85.2%), and 76.5% on the multiple-choice section of the Bar exam (73.0%); API priced the same as Claude 1.3

Source — Primary sources first; secondary reports are labelled “Press”

Officialanthropic.comhttps://www.anthropic.com/news/claude-2

Added in Week 41, 2026 · See that week

On the map — ① Prompt Engineering line

  1. Previous stopPaLM 2
  2. This recordClaude 2
  3. Next stopChain-of-Verification
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In the model family tree — Claude family · 20 versions

  1. Earlier versionClaude
  2. This recordClaude 2
  3. Later versionClaude Instant 1.2
See the whole Claude family

Same week

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Nearby on the same axis

Measuring Faithfulness in Chain-of-Thought Reasoning publishedPaperSkeleton-of-Thought publishedPaperAnthropic releases Claude Instant 1.2OfficialGraph of Thoughts publishedPaper