Claude Opus 4

Anthropic · Released May 2025 · Knowledge cutoff January 2025

Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in...

It belongs to Anthropic's Claude family: Opus is the deep-capability tier, Sonnet balances quality and speed, Haiku is the light tier, and Fast servings trade some depth for latency.

Facts and pricing

Provider

Anthropic

Context window

200K tokens

Input price

165 credits / 1M tokens ($15.00 raw)

Output price

825 credits / 1M tokens ($75.00 raw)

Vision (image input)

Yes

Tool calling

Yes

Extended reasoning

No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.10x margin. Raw prices shown per 1M tokens.

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What Claude Opus 4 is best for

• Hard problems where answer quality matters more than cost: strategy, analysis, difficult writing
• Long documents: the 200K-token window holds lengthy reports, contracts or papers whole
• Working with images: screenshots, charts, photos and scanned documents alongside text
• Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Example prompts

Prompts that suit a frontier model like Claude Opus 4:

• Review this business plan and give me the three hardest questions an investor would ask
• Rewrite this announcement so it lands with both engineers and executives
• I am choosing between two job offers, help me think through the tradeoffs
• Draft a technical design doc for a rate limiter, including failure modes

Anthropic family

All 27 Anthropic models

Frequently asked questions

What is Claude Opus 4?

Claude Opus 4 is an AI model by Anthropic. Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in...

How much does Claude Opus 4 cost on Zeplik?

Input tokens cost 165 credits per million and output tokens 825 credits per million (1 credit = $0.10; the raw provider rates are $15.00 and $75.00 per million). New accounts start with free credits.

How long can a conversation with Claude Opus 4 be?

Claude Opus 4 has a 200K-token context window (200,000 tokens), which covers the conversation plus any documents you attach.

Does Claude Opus 4 support images and tools?

Claude Opus 4 accepts image input and supports tool calling.

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