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Anthropic

Claude Opus 5.5

Claude model for long-running agentic coding and knowledge work

anthropic/claude-opus-5-5

Context

1M

Output

128K

Released

2026-09-22

Knowledge cutoff

2026-06

Types

InputTextImagePDF

OutputText

Reasoning

Supported

Tool use

Supported

Structured output

—

Attachments

Supported

Open weights

—

Provider pricing

InTextImagePDF

OutText

Price: $4.00 / $20.00
Context: 1M
Status: Stable

InTextImage

OutText

Price: $4.00 / $20.00
Context: 1M
Status: Stable

InTextImagePDF

OutText

Price: $4.00 / $20.00
Context: 1M
Status: Stable

InTextImagePDF

OutText

Price: $4.00 / $20.00
Context: 1M
Status: Stable

InTextImagePDF

OutText

Price: $4.00 / $20.00
Context: 1M
Status: Stable

InTextImagePDF

OutText

Price: $4.00 / $20.00
Context: 1M
Status: Stable

Provider	Types	Price	Context	Status
Aixy	InTextImagePDF OutText	$4.00 / $20.00	1M	Stable
CrossModel	InTextImage OutText	$4.00 / $20.00	1M	Stable
Eden AI	InTextImagePDF OutText	$4.00 / $20.00	1M	Stable
LLM Gateway	InTextImagePDF OutText	$4.00 / $20.00	1M	Stable
Merge Gateway	InTextImagePDF OutText	$4.00 / $20.00	1M	Stable
NEAR AI Cloud	InTextImagePDF OutText	$4.00 / $20.00	1M	Stable

Benchmarks

Terminal-Bench
66.4 · score
FrontierCode
54.4 · score
CursorBench
57.8 · score
GDPval-AA
1846 · Elo
AutomationBench
40 · pass rate
Humanity's Last Exam
67.7 · score
Terminal-Bench-Science
58.7 · score
OSWorld
81.8 · partial score
Chartography
89 · score

From the same lab

Claude Haiku 5.5

anthropic/claude-haiku-5-5

Claude Sonnet 5.5

anthropic/claude-sonnet-5-5

Claude Fable 5.1

anthropic/claude-fable-5-1

Claude Opus 5

anthropic/claude-opus-5

Claude Sonnet 5

anthropic/claude-sonnet-5

Claude Fable 5

anthropic/claude-fable-5

Claude Mythos 5

anthropic/claude-mythos-5

Claude Opus 4.8

anthropic/claude-opus-4-8