Microsoft: Phi 4
microsoft/phi-4
Try Phi 4 for free in your browser, and add it to your app for free with Puter.js AI API.
Try it free Add to your app// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain quantum computing in simple terms", {
model: "microsoft/phi-4"
}).then(response => {
document.body.innerHTML = response.message.content;
});
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
puter.ai.chat("Explain quantum computing in simple terms", {
model: "microsoft/phi-4"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
Model Card
Phi-4 is a 14B parameter small language model from Microsoft that excels at complex reasoning tasks, especially mathematics, outperforming many larger models on math competition benchmarks while being efficient enough for edge deployment.
Context Window 16K
tokens
Max Output 15K
tokens
Input Cost $0.07
per million tokens
Output Cost $0.14
per million tokens
Input text
modalities
Tool Use No
Release Date Jan 10, 2025
Output Speed 44
tokens / sec
Latency 0.98s
time to first token
Try Phi 4 for free
Try Phi 4 instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
Benchmarks
How Phi 4 performs on standard evaluations.
| Benchmark | Score |
|---|---|
| GPQA Diamond Graduate-level science Q&A | 57.5% |
| Humanity's Last Exam Cross-domain reasoning | 3.8% |
| LiveCodeBench Recent coding problems | 23.1% |
| MATH-500 Competition math | 81.0% |
| AIME 2024 Advanced math exam | 14.3% |
| AIME 2025 Advanced math exam | 18.0% |
| IFBench Instruction following | 23.5% |
| LCR Long-context reasoning | 0.0% |
| Terminal-Bench Hard Agentic terminal tasks | 3.8% |
| τ²-Bench Tool use / agents | 0.0% |
Scores sourced from Artificial Analysis.
Frequently Asked Questions
You can access Phi 4 by Microsoft through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required. You can also use it with Python or cURL via Puter's OpenAI-compatible API.
Phi 4 is free to try with a Puter account. Every account includes a free AI allowance, and you can chat with it in the playground on this page. You can upgrade your account anytime for a larger allowance.
Phi 4 is free to integrate using the Puter.js AI API. With the User-Pays Model, you can add AI to your app for $0, since users cover their own AI usage through their Puter account.
| Price per 1M tokens | |
|---|---|
| Input | $0.07 |
| Output | $0.14 |
Phi 4 was created by Microsoft and released on Jan 10, 2025.
Phi 4 supports a context window of 16K tokens. For reference, that is roughly equivalent to 33 pages of text.
Phi 4 can generate up to 15K tokens in a single response.
Phi 4 accepts the following input types: text. It produces: text.
No, Phi 4 does not currently support tool use (function calling).
Phi 4 scores 5.9 on the Artificial Analysis Intelligence Index, outperforming 13% of tracked models. On math, it scores 18.0 (outperforms 20% of models).
Yes — the Phi 4 API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.
Add Phi 4 to your app for free
Developers can integrate Phi 4 for free using the Puter.js AI API.
With the User-Pays Model, each user covers their own AI usage instead of the developer.