How much do Gemini 2.5 Flash or GPT-4o mini cost per month?

For an example workload of 20 million input tokens and 5 million output tokens per month: Gemini 2.5 Flash: $19. GPT-4o mini: $6.00. 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: Gemini 2.5 Flash or GPT-4o mini?

Gemini 2.5 Flash: 1M tokens of context; maximum output 66K tokens. GPT-4o mini: 128K tokens of context; maximum output 16K 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: Gemini 2.5 Flash or GPT-4o mini?

Gemini 2.5 Flash: Artificial Analysis SciCode not listed. GPT-4o mini: 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: Gemini 2.5 Flash or GPT-4o mini?

Gemini 2.5 Flash: Artificial Analysis output speed 190 tokens/s; time to first token 0.46 seconds. GPT-4o mini: Artificial Analysis output speed 89 tokens/s; time to first token 0.88 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 Gemini 2.5 Flash or GPT-4o mini support images, audio or video?

Gemini 2.5 Flash: listed input formats: file, image, text, audio, video; output formats: text. GPT-4o mini: listed input formats: text, image, file; 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 Gemini 2.5 Flash or GPT-4o mini support tool calling and structured outputs?

Gemini 2.5 Flash: listed features: Function calling, Structured outputs, JSON mode, Reasoning, Deterministic seed, Prompt caching. GPT-4o mini: listed features: Function calling, Structured outputs, JSON mode, Built-in web search, Log probabilities, Deterministic seed, Prompt caching. 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 Gemini 2.5 Flash or GPT-4o mini?

Gemini 2.5 Flash: cached input price $0.03 per million tokens. GPT-4o mini: cached input price $0.07 per million tokens. 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 Gemini 2.5 Flash or GPT-4o mini available through an API?

Gemini 2.5 Flash: catalog status active; API identifier gemini-2.5-flash; listed API hosts Google, Google, Google, Google AI Studio, Google AI Studio, Google, Google AI Studio. GPT-4o mini: catalog status active; API identifier gpt-4o-mini; listed API hosts Azure, OpenAI, Azure. 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

Gemini 2.5 Flash vs GPT-4o mini

Compare Gemini 2.5 Flash, GPT-4o mini 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

Gemini 2.5 Flash

$19 / mo

GPT-4o mini

$6.00 / mo

Performance comparison

Gemini 2.5 Flash

9.9

GPT-4o mini

6.7

Overview

Overview	Gemini 2.5 Flash	GPT-4o mini
Provider	Google	OpenAI
Released	2025-05	2024-07
Status	Active	Active
Input formats	fileimagetextaudiovideo	textimagefile
Output formats	text	text

Provider

Gemini 2.5 Flash: Google
GPT-4o mini: OpenAI

Released

Gemini 2.5 Flash: 2025-05
GPT-4o mini: 2024-07

Status

Gemini 2.5 Flash: Active
GPT-4o mini: Active

Input formats

Gemini 2.5 Flash: fileimagetextaudiovideo
GPT-4o mini: textimagefile

Output formats

Gemini 2.5 Flash: text
GPT-4o mini: text

Pricing & capacity

Pricing & capacity	Gemini 2.5 Flash	GPT-4o mini
Input / 1M tokens	$0.30	$0.15
Output / 1M tokens	$2.50	$0.60
Cached input / 1M	$0.03	$0.07
Monthly cost	$19	$6.00
Context window	1M	128K
Maximum output	66K	16K

Input / 1M tokens

Gemini 2.5 Flash: $0.30
GPT-4o mini: $0.15

Output / 1M tokens

Gemini 2.5 Flash: $2.50
GPT-4o mini: $0.60

Cached input / 1M

Gemini 2.5 Flash: $0.03
GPT-4o mini: $0.07

Monthly cost

Gemini 2.5 Flash: $19
GPT-4o mini: $6.00

Context window

Gemini 2.5 Flash: 1M
GPT-4o mini: 128K

Maximum output

Gemini 2.5 Flash: 66K
GPT-4o mini: 16K

Benchmarks & performance

Benchmarks & performance	Gemini 2.5 Flash	GPT-4o mini
Arena Elo	1,200	1,123
MMLU-Pro	73.6%	60.7%
Intelligence Index	9.9	6.7
GPQA	68.3%	42.6%
Humanity’s Last Exam	4.7%	4.2%
SciCode	Not listed	Not listed
Output speed	190 tokens/s	89 tokens/s
Time to first token	0.46 s	0.88 s
DesignArena rating	1,063	Not listed
DesignArena win rate	45.4%	Not listed

Arena Elo

Gemini 2.5 Flash: 1,200
GPT-4o mini: 1,123

MMLU-Pro

Gemini 2.5 Flash: 73.6%
GPT-4o mini: 60.7%

Intelligence Index

Gemini 2.5 Flash: 9.9
GPT-4o mini: 6.7

GPQA

Gemini 2.5 Flash: 68.3%
GPT-4o mini: 42.6%

Humanity’s Last Exam

Gemini 2.5 Flash: 4.7%
GPT-4o mini: 4.2%

SciCode

Gemini 2.5 Flash: Not listed
GPT-4o mini: Not listed

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Tools & features

Tools & features	Gemini 2.5 Flash	GPT-4o mini
Function calling	Supported	Supported
Structured outputs	Supported	Supported
JSON mode	Supported	Supported
Reasoning	Supported	Not listed
Built-in web search	Not listed	Supported
Log probabilities	Not listed	Supported
Deterministic seed	Supported	Supported
Parallel tool calls	Not listed	Not listed
Prompt caching	Supported	Supported

Function calling

Gemini 2.5 Flash: Supported
GPT-4o mini: Supported

Structured outputs

Gemini 2.5 Flash: Supported
GPT-4o mini: Supported

JSON mode

Gemini 2.5 Flash: Supported
GPT-4o mini: Supported

Reasoning

Gemini 2.5 Flash: Supported
GPT-4o mini: Not listed

Built-in web search

Gemini 2.5 Flash: Not listed
GPT-4o mini: Supported

Log probabilities

Gemini 2.5 Flash: Not listed
GPT-4o mini: Supported

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API & availability

API & availability	Gemini 2.5 Flash	GPT-4o mini
API identifier	`gemini-2.5-flash`	`gpt-4o-mini`
API providers	Google, Google, Google, Google AI Studio, Google AI Studio, Google, Google AI Studio	Azure, OpenAI, Azure
Knowledge cutoff	2025-01-31	2023-10-31
Prices checked	Oct 8, 2026	Oct 8, 2026

API identifier

Gemini 2.5 Flash: gemini-2.5-flash
GPT-4o mini: gpt-4o-mini

API providers

Gemini 2.5 Flash: Google, Google, Google, Google AI Studio, Google AI Studio, Google, Google AI Studio
GPT-4o mini: Azure, OpenAI, Azure

Knowledge cutoff

Gemini 2.5 Flash: 2025-01-31
GPT-4o mini: 2023-10-31

Prices checked

Gemini 2.5 Flash: Oct 8, 2026
GPT-4o mini: Oct 8, 2026

About the models

Gemini 2.5 Flash

Fast, low-cost multimodal workhorse.

Full pricing & details

GPT-4o mini

Low-cost multimodal GPT-4o variant.

Full pricing & details

Comparison FAQ

Gemini 2.5 Flash: $0.30 input and $2.50 output per million tokens. GPT-4o mini: $0.15 input and $0.60 output per million tokens. The cheaper choice depends on your input-to-output ratio; a model can have a lower input rate but a higher output rate.

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Monthly workload

Monthly cost breakdown

Performance comparison

Overview

Pricing & capacity

Benchmarks & performance

Tools & features

API & availability

About the models

Gemini 2.5 Flash

GPT-4o mini

Comparison FAQ

Which costs less: Gemini 2.5 Flash or GPT-4o mini?

How much do Gemini 2.5 Flash or GPT-4o mini cost per month?

Which has a larger context window: Gemini 2.5 Flash or GPT-4o mini?

Which is better for coding: Gemini 2.5 Flash or GPT-4o mini?

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

Which responds faster: Gemini 2.5 Flash or GPT-4o mini?

Do Gemini 2.5 Flash or GPT-4o mini support images, audio or video?

Do Gemini 2.5 Flash or GPT-4o mini support tool calling and structured outputs?

Can prompt caching reduce the cost of Gemini 2.5 Flash or GPT-4o mini?

Are Gemini 2.5 Flash or GPT-4o mini available through an API?

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