Phi-3.5 Mini 128K Instruct

Microsoft chat Free

API ID: microsoft/phi-3.5-mini-128k-instruct

Input Price
Free
/1M tokens
Output Price
Free
/1M tokens

About Phi-3.5 Mini 128K Instruct

Phi-3.5 models are lightweight, state-of-the-art open models. These models were trained with Phi-3 datasets that include both synthetic data and the filtered, publicly available websites data, with a focus on high quality and reasoning-dense properties. Phi-3.5 Mini uses 3.8B parameters, and is a dense decoder-only transformer model using the same tokenizer as [Phi-3 Mini](/models/microsoft/phi-3-mini-128k-instruct). The models underwent a rigorous enhancement process, incorporating both supervised fine-tuning, proximal policy optimization, and direct preference optimization to ensure precise instruction adherence and robust safety measures. When assessed against benchmarks that test common sense, language understanding, math, code, long context and logical reasoning, Phi-3.5 models showcased robust and state-of-the-art performance among models with less than 13 billion parameters.

๐Ÿ†
Price Ranking
#6 lowest price among 1240 Chat models โ€” Top 20% cheapest!

Model Specifications

Context Length
128k
Max Output
โ€”
Release Date
2024-08-21
Capabilities
chat
Input Modalities
text
Output Modalities
text

Best For

  • Conversations, content writing, general assistance

Consider Alternatives For

  • Image understanding (needs vision capability)
๐ŸŽ‰

This model is completely free!

No token costs - use it without worrying about API bills.

Estimate Token Usage

Microsoft Model Lineup

Compare all models from Microsoft to find the best fit

Model Input Output Context Capabilities
Phi-3.5 Mini 128K Instruct Current Free Free 128k chat
Phi-3 Medium 4K Instruct Free Free 4k chat
Phi-3 Medium 4K Instruct Free Free 4k chat
WizardLM-2 7B Free Free 32k chat
WizardLM-2 7B Free Free 32k chat
Phi 4 Multimodal Instruct Free Free 131k chat vision

Similar Models from Other Providers

Cross-brand alternatives with similar capabilities

Google Gemma 3n 4B
Input: Free
Output: Free
Context: 33k
Alibaba Qwen Qwen2.5-VL 7B Instruct
Input: Free
Output: Free
Context: 33k
ByteDance Seedream 4.5
Input: Free
Output: Free
Context: 4k
Black Forest Labs FLUX.2 Max
Input: Free
Output: Free
Context: 47k

๐Ÿš€ Quick Start

Get started with Phi-3.5 Mini 128K Instruct API

OpenAI-compatible SDK
from openai import OpenAI

client = OpenAI(
    base_url="https://api.provider.com/v1",
    api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
    model="microsoft/phi-3.5-mini-128k-instruct",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(response.choices[0].message.content)