How much do Gemini 3.1 Pro (Preview) or GPT-6 Sol cost per month?

For an example workload of 20 million input tokens and 5 million output tokens per month: Gemini 3.1 Pro (Preview): $100. GPT-6 Sol: $90. 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 3.1 Pro (Preview) or GPT-6 Sol?

Gemini 3.1 Pro (Preview): 1M tokens of context; maximum output 66K tokens. GPT-6 Sol: 1.1M tokens of context; maximum output 128K 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 3.1 Pro (Preview) or GPT-6 Sol?

Gemini 3.1 Pro (Preview): Artificial Analysis SciCode 58.7%. GPT-6 Sol: Artificial Analysis SciCode 57.6%. 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 3.1 Pro (Preview) or GPT-6 Sol?

Gemini 3.1 Pro (Preview): Artificial Analysis output speed 120 tokens/s; time to first token 25.66 seconds. GPT-6 Sol: Artificial Analysis output speed 107 tokens/s; time to first token 107.76 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 3.1 Pro (Preview) or GPT-6 Sol support images, audio or video?

Gemini 3.1 Pro (Preview): listed input formats: audio, file, image, text, video; output formats: text. GPT-6 Sol: listed input formats: file, image, 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 Gemini 3.1 Pro (Preview) or GPT-6 Sol support tool calling and structured outputs?

Gemini 3.1 Pro (Preview): listed features: Function calling, Structured outputs, JSON mode, Reasoning, Deterministic seed, Prompt caching. GPT-6 Sol: listed features: Function calling, Structured outputs, JSON mode, Reasoning, 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 3.1 Pro (Preview) or GPT-6 Sol?

Gemini 3.1 Pro (Preview): cached input price $0.20 per million tokens. GPT-6 Sol: cached input price $0.20 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 3.1 Pro (Preview) or GPT-6 Sol available through an API?

Gemini 3.1 Pro (Preview): catalog status active; API identifier gemini-3.1-pro-preview; listed API hosts Google, Google AI Studio, Google, Google AI Studio, Google, Google AI Studio. GPT-6 Sol: catalog status active; API identifier gpt-6-sol; listed API hosts not listed. 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 3.1 Pro (Preview) vs GPT-6 Sol

Compare Gemini 3.1 Pro (Preview), GPT-6 Sol 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 3.1 Pro (Preview)

$100 / mo

GPT-6 Sol

$90 / mo

Performance comparison

Gemini 3.1 Pro (Preview)

29.7

GPT-6 Sol

47.6

Overview

Overview	Gemini 3.1 Pro (Preview)	GPT-6 Sol
Provider	Google	OpenAI
Released	Not listed	2026-08
Status	Active	Active
Input formats	audiofileimagetextvideo	fileimagetext
Output formats	text	text

Provider

Gemini 3.1 Pro (Preview): Google
GPT-6 Sol: OpenAI

Released

Gemini 3.1 Pro (Preview): Not listed
GPT-6 Sol: 2026-08

Status

Gemini 3.1 Pro (Preview): Active
GPT-6 Sol: Active

Input formats

Gemini 3.1 Pro (Preview): audiofileimagetextvideo
GPT-6 Sol: fileimagetext

Output formats

Gemini 3.1 Pro (Preview): text
GPT-6 Sol: text

Pricing & capacity

Pricing & capacity	Gemini 3.1 Pro (Preview)	GPT-6 Sol
Input / 1M tokens	$2.00	$2.00
Output / 1M tokens	$12	$10
Cached input / 1M	$0.20	$0.20
Monthly cost	$100	$90
Context window	1M	1.1M
Maximum output	66K	128K

Input / 1M tokens

Gemini 3.1 Pro (Preview): $2.00
GPT-6 Sol: $2.00

Output / 1M tokens

Gemini 3.1 Pro (Preview): $12
GPT-6 Sol: $10

Cached input / 1M

Gemini 3.1 Pro (Preview): $0.20
GPT-6 Sol: $0.20

Monthly cost

Gemini 3.1 Pro (Preview): $100
GPT-6 Sol: $90

Context window

Gemini 3.1 Pro (Preview): 1M
GPT-6 Sol: 1.1M

Maximum output

Gemini 3.1 Pro (Preview): 66K
GPT-6 Sol: 128K

Benchmarks & performance

Benchmarks & performance	Gemini 3.1 Pro (Preview)	GPT-6 Sol
Arena Elo	1,272	1,266
MMLU-Pro	85.6%	84.6%
Intelligence Index	29.7	47.6
GPQA	94.1%	Not listed
Humanity’s Last Exam	47%	47.9%
SciCode	58.7%	57.6%
Output speed	120 tokens/s	107 tokens/s
Time to first token	25.66 s	107.76 s
DesignArena rating	1,235	1,300
DesignArena win rate	54.4%	53.2%

Arena Elo

Gemini 3.1 Pro (Preview): 1,272
GPT-6 Sol: 1,266

MMLU-Pro

Gemini 3.1 Pro (Preview): 85.6%
GPT-6 Sol: 84.6%

Intelligence Index

Gemini 3.1 Pro (Preview): 29.7
GPT-6 Sol: 47.6

GPQA

Gemini 3.1 Pro (Preview): 94.1%
GPT-6 Sol: Not listed

Humanity’s Last Exam

Gemini 3.1 Pro (Preview): 47%
GPT-6 Sol: 47.9%

SciCode

Gemini 3.1 Pro (Preview): 58.7%
GPT-6 Sol: 57.6%

Output speed

Gemini 3.1 Pro (Preview): 120 tokens/s
GPT-6 Sol: 107 tokens/s

Time to first token

Gemini 3.1 Pro (Preview): 25.66 s
GPT-6 Sol: 107.76 s

DesignArena rating

Gemini 3.1 Pro (Preview): 1,235
GPT-6 Sol: 1,300

DesignArena win rate

Gemini 3.1 Pro (Preview): 54.4%
GPT-6 Sol: 53.2%

Tools & features

Tools & features	Gemini 3.1 Pro (Preview)	GPT-6 Sol
Function calling	Supported	Supported
Structured outputs	Supported	Supported
JSON mode	Supported	Supported
Reasoning	Supported	Supported
Built-in web search	Not listed	Not listed
Log probabilities	Not listed	Not listed
Deterministic seed	Supported	Supported
Parallel tool calls	Not listed	Not listed
Prompt caching	Supported	Supported

Function calling

Gemini 3.1 Pro (Preview): Supported
GPT-6 Sol: Supported

Structured outputs

Gemini 3.1 Pro (Preview): Supported
GPT-6 Sol: Supported

JSON mode

Gemini 3.1 Pro (Preview): Supported
GPT-6 Sol: Supported

Reasoning

Gemini 3.1 Pro (Preview): Supported
GPT-6 Sol: Supported

Built-in web search

Gemini 3.1 Pro (Preview): Not listed
GPT-6 Sol: Not listed

Log probabilities

Gemini 3.1 Pro (Preview): Not listed
GPT-6 Sol: Not listed

Deterministic seed

Gemini 3.1 Pro (Preview): Supported
GPT-6 Sol: Supported

Parallel tool calls

Gemini 3.1 Pro (Preview): Not listed
GPT-6 Sol: Not listed

Prompt caching

Gemini 3.1 Pro (Preview): Supported
GPT-6 Sol: Supported

API & availability

API & availability	Gemini 3.1 Pro (Preview)	GPT-6 Sol
API identifier	`gemini-3.1-pro-preview`	`gpt-6-sol`
API providers	Google, Google AI Studio, Google, Google AI Studio, Google, Google AI Studio	Not listed
Knowledge cutoff	Not listed	Not listed
Prices checked	Oct 8, 2026	Oct 8, 2026

API identifier

Gemini 3.1 Pro (Preview): gemini-3.1-pro-preview
GPT-6 Sol: gpt-6-sol

API providers

Gemini 3.1 Pro (Preview): Google, Google AI Studio, Google, Google AI Studio, Google, Google AI Studio
GPT-6 Sol: Not listed

Knowledge cutoff

Gemini 3.1 Pro (Preview): Not listed
GPT-6 Sol: Not listed

Prices checked

Gemini 3.1 Pro (Preview): Oct 8, 2026
GPT-6 Sol: Oct 8, 2026

About the models