How much do DeepSeek V4.1 Flash or Phi-4 cost per month?

For an example workload of 20 million input tokens and 5 million output tokens per month: DeepSeek V4.1 Flash: $7.00. Phi-4: $2.10. These are token-only estimates using the displayed rates, without caching discounts, additional tool charges or taxes. Actual bills depend on usage and endpoint pricing.

Which has a larger context window: DeepSeek V4.1 Flash or Phi-4?

DeepSeek V4.1 Flash: 1M tokens of context; maximum output 944K tokens. Phi-4: 16K tokens of context; maximum output 15K tokens. Context capacity and maximum output are separate limits. A larger context window allows more material in a request but does not guarantee more accurate answers.

Which is better for coding: DeepSeek V4.1 Flash or Phi-4?

DeepSeek V4.1 Flash: Artificial Analysis SciCode 51.9%. Phi-4: Artificial Analysis SciCode not listed. Compare coding results within the same evaluation, then test representative tasks from your own codebase. A missing score is not a zero, and a single benchmark does not establish the best model for every programming task.

How do Arena Elo, DesignArena, Intelligence Index and MMLU-Pro differ?

These evaluations measure different tasks and use different scales. Arena Elo and DesignArena ratings must remain separate, as must Artificial Analysis Intelligence Index and MMLU-Pro. Compare models within the same evaluation rather than combining scores. Missing results are marked Not listed, not treated as measured zeroes.

Which responds faster: DeepSeek V4.1 Flash or Phi-4?

DeepSeek V4.1 Flash: Artificial Analysis output speed 213 tokens/s; time to first token 1.05 seconds. Phi-4: Artificial Analysis output speed 39 tokens/s; time to first token 2.59 seconds. Output speed measures generation throughput, while time to first token measures the initial wait. Real-world latency also depends on the API provider, request size and load; missing measurements cannot establish a speed winner.

Do DeepSeek V4.1 Flash or Phi-4 support images, audio or video?

DeepSeek V4.1 Flash: listed input formats: text, image; output formats: text. Phi-4: listed input formats: text; output formats: text. Input and output support are different capabilities: accepting an image does not mean a model generates images. Confirm formats and file limits for the endpoint you plan to use.

Do DeepSeek V4.1 Flash or Phi-4 support tool calling and structured outputs?

DeepSeek V4.1 Flash: listed features: Function calling, Structured outputs, JSON mode, Reasoning, Log probabilities, Deterministic seed, Prompt caching. Phi-4: listed features: Structured outputs, JSON mode, Deterministic seed. Only recorded capabilities are shown; an unlisted feature is not proof that it is unsupported. Availability can vary by API provider, so confirm tool calling and JSON schema support for your chosen endpoint.

Can prompt caching reduce the cost of DeepSeek V4.1 Flash or Phi-4?

DeepSeek V4.1 Flash: cached input price $0.02 per million tokens. Phi-4: cached input price not listed. Caching may reduce charges for eligible repeated input when supported by the endpoint. A listed cached rate does not guarantee every request qualifies; cache duration, minimum token counts and any write charges depend on the provider.

Are DeepSeek V4.1 Flash or Phi-4 available through an API?

DeepSeek V4.1 Flash: catalog status active; API identifier deepseek-v4.1-flash; listed API hosts not listed. Phi-4: catalog status active; API identifier phi-4; listed API hosts DeepInfra. Catalog status is not a live availability check. Before integrating, verify the provider's documentation, endpoint access, rate limits, regional availability and data-handling terms.

Models, measured side by side

DeepSeek V4.1 Flash vs Phi-4

Compare DeepSeek V4.1 Flash, Phi-4 by token pricing, context length, benchmark results, speed and tool support.

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Monthly workload

Input· million tokensOutput· million tokens

Monthly cost breakdown

InputOutput

DeepSeek V4.1 Flash

$7.00 / mo

Phi-4

$2.10 / mo

Performance comparison

DeepSeek V4.1 Flash

39.5

Phi-4

5.9

Overview

Overview	DeepSeek V4.1 Flash	Phi-4
Provider	DeepSeek	Microsoft
Released	2026-09-10	2024-12
Status	Active	Active
Input formats	textimage	text
Output formats	text	text

Provider

DeepSeek V4.1 Flash: DeepSeek
Phi-4: Microsoft

Released

DeepSeek V4.1 Flash: 2026-09-10
Phi-4: 2024-12

Status

DeepSeek V4.1 Flash: Active
Phi-4: Active

Input formats

DeepSeek V4.1 Flash: textimage
Phi-4: text

Output formats

DeepSeek V4.1 Flash: text
Phi-4: text

Pricing & capacity

Pricing & capacity	DeepSeek V4.1 Flash	Phi-4
Input / 1M tokens	$0.05	$0.07
Output / 1M tokens	$1.20	$0.14
Cached input / 1M	$0.02	Not listed
Monthly cost	$7.00	$2.10
Context window	1M	16K
Maximum output	944K	15K

Input / 1M tokens

DeepSeek V4.1 Flash: $0.05
Phi-4: $0.07

Output / 1M tokens

DeepSeek V4.1 Flash: $1.20
Phi-4: $0.14

Cached input / 1M

DeepSeek V4.1 Flash: $0.02
Phi-4: Not listed

Monthly cost

DeepSeek V4.1 Flash: $7.00
Phi-4: $2.10

Context window

DeepSeek V4.1 Flash: 1M
Phi-4: 16K

Maximum output

DeepSeek V4.1 Flash: 944K
Phi-4: 15K

Benchmarks & performance

Benchmarks & performance	DeepSeek V4.1 Flash	Phi-4
Arena Elo	Not listed	1,123
MMLU-Pro	Not listed	60.7%
Intelligence Index	39.5	5.9
GPQA	Not listed	57.5%
Humanity’s Last Exam	39.2%	3.8%
SciCode	51.9%	Not listed
Output speed	213 tokens/s	39 tokens/s
Time to first token	1.05 s	2.59 s
DesignArena rating	1,325	Not listed
DesignArena win rate	52.1%	Not listed

Arena Elo

DeepSeek V4.1 Flash: Not listed
Phi-4: 1,123

MMLU-Pro

DeepSeek V4.1 Flash: Not listed
Phi-4: 60.7%

Intelligence Index

DeepSeek V4.1 Flash: 39.5
Phi-4: 5.9

GPQA

DeepSeek V4.1 Flash: Not listed
Phi-4: 57.5%

Humanity’s Last Exam

DeepSeek V4.1 Flash: 39.2%
Phi-4: 3.8%

SciCode

DeepSeek V4.1 Flash: 51.9%
Phi-4: Not listed

Output speed

DeepSeek V4.1 Flash: 213 tokens/s
Phi-4: 39 tokens/s

Time to first token

DeepSeek V4.1 Flash: 1.05 s
Phi-4: 2.59 s

DesignArena rating

DeepSeek V4.1 Flash: 1,325
Phi-4: Not listed

DesignArena win rate

DeepSeek V4.1 Flash: 52.1%
Phi-4: Not listed

Tools & features

Tools & features	DeepSeek V4.1 Flash	Phi-4
Function calling	Supported	Not listed
Structured outputs	Supported	Supported
JSON mode	Supported	Supported
Reasoning	Supported	Not listed
Log probabilities	Supported	Not listed
Deterministic seed	Supported	Supported
Prompt caching	Supported	Not listed

Function calling

DeepSeek V4.1 Flash: Supported
Phi-4: Not listed

Structured outputs

DeepSeek V4.1 Flash: Supported
Phi-4: Supported

JSON mode

DeepSeek V4.1 Flash: Supported
Phi-4: Supported

Reasoning

DeepSeek V4.1 Flash: Supported
Phi-4: Not listed

Log probabilities

DeepSeek V4.1 Flash: Supported
Phi-4: Not listed

Deterministic seed

DeepSeek V4.1 Flash: Supported
Phi-4: Supported

Prompt caching

DeepSeek V4.1 Flash: Supported
Phi-4: Not listed

API & availability

API & availability	DeepSeek V4.1 Flash	Phi-4
API identifier	`deepseek-v4.1-flash`	`phi-4`
API providers	Not listed	DeepInfra
Knowledge cutoff	Not listed	2024-06-30
Prices checked	Oct 8, 2026	Oct 8, 2026

API identifier

DeepSeek V4.1 Flash: deepseek-v4.1-flash
Phi-4: phi-4

API providers

DeepSeek V4.1 Flash: Not listed
Phi-4: DeepInfra

Knowledge cutoff

DeepSeek V4.1 Flash: Not listed
Phi-4: 2024-06-30

Prices checked

DeepSeek V4.1 Flash: Oct 8, 2026
Phi-4: Oct 8, 2026

About the models