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

For an example workload of 20 million input tokens and 5 million output tokens per month: Gemini 2.5 Pro: $75. GPT-4o: $100. 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 Pro or GPT-4o?

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

Gemini 2.5 Pro: Artificial Analysis SciCode 46.3%. GPT-4o: 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 Pro or GPT-4o?

Gemini 2.5 Pro: Artificial Analysis output speed 128 tokens/s; time to first token 18.08 seconds. GPT-4o: Artificial Analysis output speed 145 tokens/s; time to first token 0.84 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 Pro or GPT-4o support images, audio or video?

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

Gemini 2.5 Pro: listed features: Function calling, Structured outputs, JSON mode, Reasoning, Deterministic seed, Prompt caching. GPT-4o: 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 Pro or GPT-4o?

Gemini 2.5 Pro: cached input price $0.13 per million tokens. GPT-4o: cached input price $1.25 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 Pro or GPT-4o available through an API?

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

Compare Gemini 2.5 Pro, GPT-4o by token pricing, context length, benchmark results, speed and tool support.

Highlight best

Monthly workload

Input· million tokensOutput· million tokens

Monthly cost breakdown

InputOutput

Gemini 2.5 Pro

$75 / mo

GPT-4o

$100 / mo

Performance comparison

Gemini 2.5 Pro

16.1

GPT-4o

8.4

Overview

Overview	Gemini 2.5 Pro	GPT-4o
Provider	Google	OpenAI
Released	2025-03	2024-05
Status	Active	Active
Input formats	textimagefileaudiovideo	textimagefile
Output formats	text	text

Provider

Gemini 2.5 Pro: Google
GPT-4o: OpenAI

Released

Gemini 2.5 Pro: 2025-03
GPT-4o: 2024-05

Status

Gemini 2.5 Pro: Active
GPT-4o: Active

Input formats

Gemini 2.5 Pro: textimagefileaudiovideo
GPT-4o: textimagefile

Output formats

Gemini 2.5 Pro: text
GPT-4o: text

Pricing & capacity

Pricing & capacity	Gemini 2.5 Pro	GPT-4o
Input / 1M tokens	$1.25	$2.50
Output / 1M tokens	$10	$10
Cached input / 1M	$0.13	$1.25
Monthly cost	$75	$100
Context window	1M	128K
Maximum output	66K	16K

Input / 1M tokens

Gemini 2.5 Pro: $1.25
GPT-4o: $2.50

Output / 1M tokens

Gemini 2.5 Pro: $10
GPT-4o: $10

Cached input / 1M

Gemini 2.5 Pro: $0.13
GPT-4o: $1.25

Monthly cost

Gemini 2.5 Pro: $75
GPT-4o: $100

Context window

Gemini 2.5 Pro: 1M
GPT-4o: 128K

Maximum output

Gemini 2.5 Pro: 66K
GPT-4o: 16K

Benchmarks & performance

Benchmarks & performance	Gemini 2.5 Pro	GPT-4o
Arena Elo	1,255	1,178
MMLU-Pro	82.8%	69.9%
Intelligence Index	16.1	8.4
GPQA	84.4%	54.3%
Humanity’s Last Exam	22.5%	2.4%
SciCode	46.3%	Not listed
Output speed	128 tokens/s	145 tokens/s
Time to first token	18.08 s	0.84 s
DesignArena rating	1,156	864
DesignArena win rate	57.5%	34.8%

Arena Elo

Gemini 2.5 Pro: 1,255
GPT-4o: 1,178

MMLU-Pro

Gemini 2.5 Pro: 82.8%
GPT-4o: 69.9%

Intelligence Index

Gemini 2.5 Pro: 16.1
GPT-4o: 8.4

GPQA

Gemini 2.5 Pro: 84.4%
GPT-4o: 54.3%

Humanity’s Last Exam

Gemini 2.5 Pro: 22.5%
GPT-4o: 2.4%

SciCode

Gemini 2.5 Pro: 46.3%
GPT-4o: Not listed

6 of 10

Tools & features

Tools & features	Gemini 2.5 Pro	GPT-4o
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 Pro: Supported
GPT-4o: Supported

Structured outputs

Gemini 2.5 Pro: Supported
GPT-4o: Supported

JSON mode

Gemini 2.5 Pro: Supported
GPT-4o: Supported

Reasoning

Gemini 2.5 Pro: Supported
GPT-4o: Not listed

Built-in web search

Gemini 2.5 Pro: Not listed
GPT-4o: Supported

Log probabilities

Gemini 2.5 Pro: Not listed
GPT-4o: Supported

6 of 9

API & availability

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

API identifier

Gemini 2.5 Pro: gemini-2.5-pro
GPT-4o: gpt-4o

API providers

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

Knowledge cutoff

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

Prices checked

Gemini 2.5 Pro: Oct 8, 2026
GPT-4o: Oct 8, 2026

About the models

Gemini 2.5 Pro

Google's thinking model with 1M-token context.

Full pricing & details

GPT-4o

Multimodal GPT-4o "omni" model for text and image input.

Full pricing & details

Comparison FAQ

Gemini 2.5 Pro: $1.25 input and $10 output per million tokens. GPT-4o: $2.50 input and $10 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.

Popular model comparisons

Claude Sonnet 4 vs GPT-4.1 DeepSeek V3 vs Gemini 2.5 Flash DeepSeek V3 vs GPT-4o mini DeepSeek R1 vs Gemini 2.5 Pro Mistral Large vs GPT-4o Gemini 2.5 Pro vs Claude Sonnet 4 Gemini 2.5 Pro vs GPT-4.1 Gemini 2.5 Flash vs GPT-4o mini

Monthly workload

Monthly cost breakdown

Performance comparison

Overview

Pricing & capacity

Benchmarks & performance

Tools & features

API & availability

About the models

Gemini 2.5 Pro

GPT-4o

Comparison FAQ

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

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

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

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

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

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

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

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

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

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

Popular model comparisons