AI model comparison

DeepSeek V4.1 Flash 1017 vs GPT-6.1 Sol

Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the `deepseek-flash` API model name.

Input / 1M: $0.15
Output / 1M: $0.60
Context: 1.05M

GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series.

Input / 1M: $2
Output / 1M: $10
Context: 1.05M

Comparing image generators? Compare image models

At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

DeepSeek V4.1 Flash 1017

15.0x cheaper for a typical chat

Higher intelligence score

GPT-6.1 Sol

51.8 vs 39.5 on Artificial Analysis

Larger context window

GPT-6.1 Sol

1.05M vs 1.05M tokens

Newer release

DeepSeek V4.1 Flash 1017

Released October 17, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

DeepSeek V4.1 Flash 101739.5

GPT-6.1 Sol51.8

Coding index

DeepSeek V4.1 Flash 1017Not available

GPT-6.1 SolNot available

Agentic index

DeepSeek V4.1 Flash 1017Not available

GPT-6.1 SolNot available

Pricing

DeepSeek V4.1 Flash 1017 vs GPT-6.1 Sol API pricing

Per-token API rates. Cheaper option highlighted.

Metric	DeepSeek V4.1 Flash 1017	GPT-6.1 Sol
Input tokensPer 1M tokens	$0.15	$2
Output tokensPer 1M tokens	$0.60	$10
Cached input (read)Per 1M tokens	$0.00	$0.10
Cache writePer 1M tokens	Not available	$2.50
Long-context pricingPer 1M tokens, for very long prompts	Same rate at any length	$4 in / $15 out above 272K
Web searchPer request	Not available	$0.01

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

DeepSeek V4.1 Flash 1017$0.60

GPT-6.1 Sol$9

Coding task

30K in, 4K out

DeepSeek V4.1 Flash 1017$6.90$2.49 cached

GPT-6.1 Sol$100$43 cached

Long document summary

150K in, 2K out

DeepSeek V4.1 Flash 1017$23.70$1.65 cached

GPT-6.1 Sol$320$35 cached

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metric	DeepSeek V4.1 Flash 1017	GPT-6.1 Sol
Context window	1.05M tokens	1.05M tokens
Max output	393K tokens	128K tokens
Input types	Image, Text	File, Image, Text
Output types	Text	Text
Reasoning effort levels	Max, High, Low, None	Max, Extra high, High, Medium, Low
Default reasoning effort	High	Medium
Release date	October 17, 2026	September 29, 2026

Features

Supported features

API features available for each model.

Metric	DeepSeek V4.1 Flash 1017	GPT-6.1 Sol
Tool calling	Supported	Supported
Structured outputs	Supported	Supported
JSON mode	Supported	Supported
Reasoning	Supported	Supported
Temperature	Supported	Not supported
Stop sequences	Supported	Not supported
Deterministic seed	Supported	Supported
Verbosity control	Not supported	Supported

Our take

DeepSeek V4.1 Flash 1017 is 15.0x cheaper for a typical chat. GPT-6.1 Sol scores higher on the Artificial Analysis Intelligence Index (51.8 vs 39.5). GPT-6.1 Sol has the larger context window (1.05M vs 1.05M tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is DeepSeek V4.1 Flash 1017 or GPT-6.1 Sol cheaper?

DeepSeek V4.1 Flash 1017 is cheaper for a typical chat (2K input tokens and 500 output tokens). DeepSeek V4.1 Flash 1017 costs $0.15 per 1M input tokens and $0.60 per 1M output tokens, while GPT-6.1 Sol costs $2 per 1M input tokens and $10 per 1M output tokens.

Which has a bigger context window, DeepSeek V4.1 Flash 1017 or GPT-6.1 Sol?

GPT-6.1 Sol supports up to 1.05M tokens of context, compared with 1.05M for DeepSeek V4.1 Flash 1017.

Is DeepSeek V4.1 Flash 1017 smarter than GPT-6.1 Sol?

On the Artificial Analysis Intelligence Index, DeepSeek V4.1 Flash 1017 scores 39.5 and GPT-6.1 Sol scores 51.8, putting GPT-6.1 Sol ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use DeepSeek V4.1 Flash 1017 and GPT-6.1 Sol at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see DeepSeek V4.1 Flash 1017 and GPT-6.1 Sol answer side by side and keep the better response.

Why choose? Ask both.

Send one prompt to DeepSeek V4.1 Flash 1017 and GPT-6.1 Sol at the same time. Compare the answers side by side and keep the best one.

Get started See a preview