What is the difference between DeepSeek V3.1 and GPT-6 Astra Pro?

DeepSeek V3.1 is developed by DeepSeek while GPT-6 Astra Pro is developed by OpenAI. DeepSeek V3.1 has a 164K token context window vs GPT-6 Astra Pro's 1.1M. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V3.1 or GPT-6 Astra Pro?

It depends on your use case. DeepSeek V3.1 and GPT-6 Astra Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 6 challenges so you can judge which fits your needs best.

How much does DeepSeek V3.1 cost compared to GPT-6 Astra Pro?

DeepSeek V3.1 costs $0.2/M input tokens and GPT-6 Astra Pro costs $10/M input tokens. DeepSeek V3.1 is $9.80/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare DeepSeek V3.1 and GPT-6 Astra Pro on Rival?

This page shows a side-by-side comparison of DeepSeek V3.1 and GPT-6 Astra Pro across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Sep 2026

DeepSeek V3.1vsGPT-6 Astra Pro

DeepSeek V3.1 is cheaper than GPT-6 Astra Pro at $0.2/M vs $10/M input tokens.

DeepSeek V3.1 and GPT-6 Astra Pro compared across 6 shared prompts
Spec	DeepSeek V3.1	GPT-6 Astra Pro
Input price	$0.2/M tokens	$10/M tokens
Output price	$0.8/M tokens	$50/M tokens
Context window	164K tokens	1.1M tokens
Weights	Open	Closed
Free API (OpenRouter)	No	No
Released	Aug 2025	Sep 2026

Our Verdict

GPT-6 Astra Pro

DeepSeek V3.1Runner-up

Not enough votes to call it. On the specs, GPT-6 Astra Pro has the edge: newer, bigger context window.

DeepSeek V3.1 costs 63x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

DeepSeek V3.1

Input

$0.20

50× cheaper

Output

$0.80

63× cheaper

GPT-6 Astra Pro

Input

$10.00

Output

$50.00

DeepSeek V3.1 is cheaper on both: 50× input, 63× output.

Where to run it

10 hosts, cheapest first

DeepSeek V3.18 hosts

HostInOutContextUptime

DeepInfrafp4$0.25 in$0.95 out164k100% up Novitafp8$0.27 in$1.00 out131k99.8% up SiliconFlowfp8$0.27 in$1.00 out164k97.4% up AtlasCloudfp8$0.30 in$0.95 out131k99.3% up CoreWeavefp8$0.55 in$1.65 out161k100% up Mara$0.60 in$1.70 out131k86.6% up

2 more hosts

SambaNovafp8$0.65 in$1.50 out131k93.3% up Google Vertex AIdegraded$0.60 in$1.70 out164k0% up

GPT-6 Astra Pro2 hosts

HostInOutContextUptime

Azure AI Foundry$10.00 in$50.00 out1.1M98.9% up OpenAI$10.00 in$50.00 out1.1M99.6% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

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More comparisons

Cost per 1M tokens

10 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between DeepSeek V3.1 and GPT-6 Astra Pro?

Which is better, DeepSeek V3.1 or GPT-6 Astra Pro?

How much does DeepSeek V3.1 cost compared to GPT-6 Astra Pro?

How can I compare DeepSeek V3.1 and GPT-6 Astra Pro on Rival?

More comparisons

Against the newest arrivals

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Model pages

Cost per 1M tokens

10 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between DeepSeek V3.1 and GPT-6 Astra Pro?

Which is better, DeepSeek V3.1 or GPT-6 Astra Pro?

How much does DeepSeek V3.1 cost compared to GPT-6 Astra Pro?

How can I compare DeepSeek V3.1 and GPT-6 Astra Pro on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages