How much does Phi 4 cost per million tokens?

Phi 4 costs $0.07 per million input tokens and $0.14 per million output tokens at list price.

What is the context window of Phi 4?

Phi 4 accepts up to 16,384 tokens of context and returns up to 14,745 output tokens.

How much do 1,000 chat messages cost with Phi 4?

About $0.14, assuming 1,000 input + 500 output tokens per message.

Is there a cheaper alternative to Phi 4?

In the same price range, Qwen Qwen3.7 Flash ($0.03 / $0.13), DeepSeek DeepSeek V4 Flash 0423 ($0.042 / $0.084), OpenAI gpt-oss-120b ($0.037 / $0.17) cost less per token. Quality differs: test on your own prompts.

Where can I buy Microsoft API credits for less?

Discount credit books resell OpenRouter usage below face value within their depth, OpenRouter adds a 5.5% card fee, and Microsoft sells its own credits at face value. The live table on this page ranks them for $100 of usage.

Microsoft · live price

Phi 4 API pricing

Microsoft Research 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...

Small and cheap (under $1 per 1M)

Input: $0.07; per 1M tokens
Output: $0.14; per 1M tokens
Cached input: –; per 1M tokens
Context: 16K; 15K max output

List price from OpenRouter, which passes Microsoft's price through without markup. Refreshed hourly. Released January 10, 2025. Model id microsoft/phi-4.

What Phi 4 costs in practice

At list price, before any batch or caching discount.

1,000 chat messages

$0.14

1,000 input + 500 output tokens each

1,000 RAG questions

$0.63

8,000 input + 500 output tokens each

100 coding-agent steps

$0.24

30,000 input + 2,000 output tokens each, no caching

Phi 4 price history

No price change since we started tracking on 2026-10-01. We record prices daily; changes will show here.

Phi 4 price by host

One host serves this model through OpenRouter.

DeepInfra$0.07 in · $0.14 out · 16K ctx · 100.0% uptime 24h

Where to buy Microsoft credits for less

Phi 4 costs the same per token everywhere it's sold through OpenRouter. What changes is the price of the credits. Live quotes for $100 of usage:

#	Where you buy	You payYou pay for $100.00 of usage	vs list price	Price source
1	OrbioCardCheapest right now Credits from a discount book, plus a 5% platform fee and card processing, both included in the quote.	$85.10 incl. $2.60 card processing	-14.9%	live quote
2	smaaartCard Credits from a discount book, plus a 5% platform fee on face value. Card processing and taxes shown at checkout.	$95.00 + card processing and tax at checkout (not in this number)	-5.0%	live quote
3	Direct from the labCard Prepaid credits at face value (OpenAI, Anthropic, Google…). Taxes may apply.	$100.00 no top-up fee	list price	face value
4	OpenRouterCrypto 5% on crypto purchases. No markup on model prices.	$105.00 fees included	+5.0%	published fee
5	OpenRouterCard 5.5% on card purchases, $0.80 minimum. No markup on model prices.	$105.50 fees included	+5.5%	published fee

Disclosure: this site is run by the team behind smaaart, one of the options compared. Tables are ranked by price only, from live quotes and published fees, including when smaaart isn't first. How we compare

Phi 4 cost calculator

Enter your monthly tokens to price your own usage.

Model$0.07 in / $0.14 out per 1M tokens · list price, liveInput tokens / month (millions)Output tokens / month (millions)

Usage at list price$4.90/ month(quotes below are for $5.00: purchases run from $5.00 to $10,000.00)

Cheaper alternatives to Phi 4

Other labs' models in the same price range or the one below, cheaper per token.

Model	Input / 1M	Output / 1M	Blended 3:1	Context
Qwen: Qwen3.7 Flash	$0.03	$0.13	$0.055	1M
DeepSeek: DeepSeek V4 Flash 0423	$0.042	$0.084	$0.052	1.0M
OpenAI: gpt-oss-120b	$0.037	$0.17	$0.07	131K
OpenAI: gpt-oss-20b	$0.018	$0.09	$0.036	131K
Qwen: Qwen3 30B A3B Instruct 2507	$0.048	$0.193	$0.084	262K
Google: Gemma 3 4B	$0.05	$0.1	$0.063	131K

Other Microsoft models

Model	Input / 1M	Output / 1M	Blended 3:1	Context
WizardLM-2 8x22B	$0.62	$0.62	$0.62	66K

All Microsoft API prices