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Claude 2

Anthropic

Updated May 22, 2026 · Benchmarks via Artificial Analysis, specs & pricing via OpenRouter · Methodology · Report an error

Superseded by Claude 3 Opus

Specifications

Type
LLM
Access
API only
Released
July 11, 2023
Context window
100,000 tokens
Input
Text
Output
Text
API pricing
$0.00 in · $0.00 out / 1M tokens

Benchmarks

Reasoning

General

MMLU
78.5
MMLU-Pro
48.6

Our take

Brought a then-huge 100K-token context window to a mainstream assistant, making long-document analysis a headline feature.

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