What is the difference between GPT-6 Astra Pro and MiniMax M2.5?

GPT-6 Astra Pro is developed by OpenAI while MiniMax M2.5 is developed by MiniMax. GPT-6 Astra Pro has a 1.1M token context window vs MiniMax M2.5's 205K. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.

Which is better, GPT-6 Astra Pro or MiniMax M2.5?

It depends on your use case. GPT-6 Astra Pro and MiniMax M2.5 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 GPT-6 Astra Pro cost compared to MiniMax M2.5?

GPT-6 Astra Pro costs $10/M input tokens and MiniMax M2.5 costs $0.3/M input tokens. MiniMax M2.5 is $9.70/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 GPT-6 Astra Pro and MiniMax M2.5 on Rival?

This page shows a side-by-side comparison of GPT-6 Astra Pro and MiniMax M2.5 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

GPT-6 Astra ProvsMiniMax M2.5

MiniMax M2.5 is cheaper than GPT-6 Astra Pro at $0.3/M vs $10/M input tokens.

GPT-6 Astra Pro and MiniMax M2.5 compared across 6 shared prompts
Spec	GPT-6 Astra Pro	MiniMax M2.5
Input price	$10/M tokens	$0.3/M tokens
Output price	$50/M tokens	$1.2/M tokens
Context window	1.1M tokens	205K tokens
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	Sep 2026	Feb 2026

Our Verdict

GPT-6 Astra Pro

MiniMax M2.5Runner-up

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

MiniMax M2.5 costs 42x less per token.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GPT-6 Astra Pro

Input

$10.00

Output

$50.00

MiniMax M2.5

Input

$0.30

33× cheaper

Output

$1.20

42× cheaper

MiniMax M2.5 is cheaper on both: 33× input, 42× output.

Where to run it

9 hosts, cheapest first

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

MiniMax M2.57 hosts

HostInOutContextUptime

Venice$0.27 in$0.95 out198k92.3% up StreamLake$0.27 in$1.08 out200k99.6% up AtlasCloudfp8$0.29 in$1.20 out197k99.6% up DigitalOcean$0.30 in$1.20 out66k99.9% up Friendli$0.30 in$1.20 out197k100% up MiniMaxfp8$0.30 in$1.20 out205k99.9% up

1 more host

Novitafp8$0.30 in$1.20 out205k99.6% up

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

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Cost per 1M tokens

9 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between GPT-6 Astra Pro and MiniMax M2.5?

Which is better, GPT-6 Astra Pro or MiniMax M2.5?

How much does GPT-6 Astra Pro cost compared to MiniMax M2.5?

How can I compare GPT-6 Astra Pro and MiniMax M2.5 on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Cost per 1M tokens

9 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between GPT-6 Astra Pro and MiniMax M2.5?

Which is better, GPT-6 Astra Pro or MiniMax M2.5?

How much does GPT-6 Astra Pro cost compared to MiniMax M2.5?

How can I compare GPT-6 Astra Pro and MiniMax M2.5 on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages