Phi 4

Microsoft · Released January 2025 · Knowledge cutoff June 2024

[Microsoft Research](/microsoft) Phi-4 is designed to perform well in complex reasoning tasks and can operate efficiently in situations with limited memory or where quick responses are needed. At 14 billion...

Facts and pricing

Provider

Microsoft

Context window

16K tokens

Input price

0.77 credits / 1M tokens ($0.070 raw)

Output price

1.5 credits / 1M tokens ($0.14 raw)

Vision (image input)

No

Tool calling

No

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 Phi 4 is best for

• Everyday chat and drafting on an open-weight model with transparent lineage

Microsoft family

Frequently asked questions

What is Phi 4?

Phi 4 is an AI model by Microsoft. [Microsoft Research](/microsoft) Phi-4 is designed to perform well in complex reasoning tasks and can operate efficiently in situations with limited memory or where quick responses are needed. At 14 billion...

How much does Phi 4 cost on Zeplik?

Input tokens cost 0.77 credits per million and output tokens 1.5 credits per million (1 credit = $0.10; the raw provider rates are $0.070 and $0.14 per million). New accounts start with free credits.

How long can a conversation with Phi 4 be?

Phi 4 has a 16K-token context window (16,384 tokens), which covers the conversation plus any documents you attach.

Does Phi 4 support images and tools?

Phi 4 is text-only and does not support tool calling.

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