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Claude 2.1


Claude 2.1 is Anthropic logoAnthropic's language model. An updated Claude 2 model with reduced hallucination rates, improved honesty, and expanded 200K token context for long-document tasks.
Spec
Canonical IDanthropic-claude-2-1
TypeLanguage
StatusActive
CreatorAnthropicAnthropic
Input ModalitiesText
Output ModalitiesText
Intelligence Index
9.3
#282
Coding Index
14.0
#148
MMLU-Pro
0.5
#218
GPQA
0.3
#287
HLE
0.0
#246
LiveCodeBench
0.2
#197
AIME
0.0
#123
Time to First Token
SciCode
0.2
#236
MATH-500
0.4
#144
Output TPS
0.0
#225

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Claude Opus 4.71.0M$5.00$25.00Available
Claude Sonnet 4.61.0M$3.00$15.00Available
Claude Opus 4.61.0M$5.00$25.00Available
Claude Opus 4.5410K$5.00$25.00Available
Claude Haiku 4.5200K$1.00$5.00Deprecating
Claude Sonnet 4.51.0M$3.00$15.00Available
Claude Opus 4.1200K$15.00$75.00Deprecating
Claude Sonnet 4.1200K$3.00$15.00Available
Claude Opus 4410K$15.00$75.00Deprecated
Claude Sonnet 41.0M$3.00$15.00Deprecated
Claude 2.1Current

Model IDs