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anthropic/claude-opus-4-7

Claude Opus 4.7

Opus 4.7 is the next generation of Anthropic's Opus family, built for long-running, asynchronous agents. Building on the coding and agentic strengths of Opus 4.6, it delivers stronger performance on...

4/16/2026
1,000,000 tokens
#4 Text (Coding)
Input: ¥840/M
Output: ¥4,200/M
Try in ChatGet API Key

Specifications

Modalities

Input
text
image
file
Output
text

Supported Parameters

include_reasoning
max_completion_tokens
max_tokens
reasoning
reasoning_effort
response_format
stop
structured_outputs
tool_choice
tools
verbosity

Max Output Tokens

128,000

Code Examples

curl https://api.fastmetal.ai/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "anthropic-claude-opus-4-7",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Frequently asked questions

How much does the Claude Opus 4.7 API cost?
On FastMetal, Claude Opus 4.7 is billed per token in yen: ¥840 per 1M input tokens and ¥4,200 per 1M output tokens, before tax. Usage is drawn from a prepaid balance; there is no subscription or monthly fee.
Can I call Claude Opus 4.7 with the OpenAI SDK?
Yes. Point base_url at https://api.fastmetal.ai/v1 and pass "anthropic-claude-opus-4-7" as the model; existing OpenAI-style code works unchanged, including streaming, tool calls and structured output.
What is the context window of Claude Opus 4.7?
1,000,000 tokens, shared between the prompt and the response.
How does Claude Opus 4.7 rank?
#17 on the public arena's Japanese board (ELO 1,478). Ranks move as the leaderboard is updated.
What do I need to try Claude Opus 4.7?
Create an account and add credit; the model is then available both in the browser chat and over the API. There is no contract or minimum spend.

Try Claude Opus 4.7 right now

Claude Opus 4.7 is available on FastMetal through one API key. Start in the browser, or call it from the OpenAI SDK.

Create a free account

Leaderboard

Text
OverallELO: 1,494
#7
JapaneseELO: 1,478
#17
ChineseELO: 1,532
#14
KoreanELO: 1,468
#7
EnglishELO: 1,500
#9
frenchELO: 1,512
#6
germanELO: 1,495
#9
spanishELO: 1,474
#19
russianELO: 1,497
#11
CodingELO: 1,547
#4
MathELO: 1,492
#17
Creative WritingELO: 1,481
#8
Instruction FollowingELO: 1,493
#7
Hard PromptsELO: 1,519
#6
Multi-TurnELO: 1,515
#5
Vision
OverallELO: 1,299
#4
Code
OverallELO: 1,557
#24

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