Claude Opus 4.5

claude-opus-4-5-20251101

Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use.

Reasoning

Highest

Speed

Medium

Price

$4.00 • $20.00

Input • Output

Cache Price

$0.40 • $5.00

Read • Write

Input

Text, Image

Output

Text

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Specifications

Context Window

200K

Max Output Tokens

32K

Announced Date

2025-11-24

Released Date

2025-11-24

Knowledge Cutoff

2025-03-31

Reasoning Token Support

✓

Modalities

Text

Input and output

Image

Input only

Audio

Not supported

Video

Not supported

Endpoints

OpenAI Compatible

Chat Completions

/v1/chat/completions

Responses

/v1/responses

Embeddings

/v1/embeddings

Image Generation

/v1/images/generations

Image Edit

/v1/images/edits

Videos

/v1/videos

Claude Compatible

Messages

/v1/messages

Gemini Compatible

Generate Content

/v1beta/models/{model}:{operator}

Performance Rankings

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Code Arena

Claude Opus 4.6

2,002

Gemini 3.1 Pro

1,855

GLM-5

1,600

Claude Opus 4.5

1,582

Gemini 3 Pro

1,579

🥈

Gemini 3.1 Pro

1,855

🥉

GLM-5

1,600

Claude Opus 4.5This Model

1,582

Gemini 3 Pro

1,579

Gemini 3 Flash

1,578

Chat Arena

Claude Opus 4.6

1,476

Claude Opus 4.5

1,345

GLM-4.5

1,342

Grok-4 Fast Reasoning

1,338

DeepSeek-V3.2-Exp

1,300

🥇

Claude Opus 4.6

1,476

🥈

Claude Opus 4.5This Model

1,345

🥉

GLM-4.5

1,342

Grok-4 Fast Reasoning

1,338

GPQA

Gemini 3.1 Pro

94.3%

GPT-5.2 Pro

93.2%

GPT-5.4

92.8%

GPT-5.2

92.4%

Gemini 3 Pro

91.9%

Grok-4

87.5%

GPT-5 High

87.3%

Claude Opus 4.5This Model

87.0%

Gemini 3.1 Flash-Lite

86.9%

Qwen3.5-122B-A10B

86.6%

AIME 2025

Grok-4 Heavy

100.0%

GPT-5.2

100.0%

Gemini 3 Pro

100.0%

Kimi K2-Thinking-0905

100.0%

GPT-5.2 Pro

100.0%

SWE-Bench

Claude Opus 4.5

80.9%

Claude Opus 4.6

80.8%

Gemini 3.1 Pro

80.6%

MiniMax M2.5

80.2%

GPT-5.2

80.0%

🥇

Claude Opus 4.5This Model

80.9%

🥈

Claude Opus 4.6

80.8%

🥉

Gemini 3.1 Pro

80.6%

ARC-AGI v2

Gemini 3.1 Pro

77.1%

GPT-5.4

73.3%

Claude Opus 4.6

68.8%

Claude Sonnet 4.6

58.3%

GPT-5.2 Pro

54.2%

GPT-5.2 Pro

54.2%

GPT-5.2

52.9%

Claude Opus 4.5This Model

37.6%

Gemini 3 Flash

33.6%

Gemini 3 Pro

31.1%

Metric Definitions

LLM

Code Arena: Average score across coding arenas based on human votes.
Chat Arena: Human preference score from blind comparisons.
GPQA: Graduate-level science questions requiring expert knowledge.
AIME 2025: Recent math competition problems.
SWE-Bench: Real GitHub issues requiring code changes.
ARC-AGI v2: Abstract reasoning problems.

Image

IMAGE GEN: Human preference score for text-to-image generation.
IMAGE EDIT: Human preference score for image editing and transformation.

Video

Text to Video: Human preference score for text-to-video generation.
Image to Video: Human preference score for image-to-video generation.
Video to Video: Human preference score for video editing capabilities.

TTS

TTS: Human preference score for text-to-speech quality.

STT

STT: Human preference score for transcription accuracy.

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Powerful API Access

High Cost-Effectiveness

Interactive Studio UI

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