What is the difference between o1 and Qwen3.8 Max Prime?

o1 is developed by OpenAI while Qwen3.8 Max Prime is developed by Qwen. o1 has a 128K token context window vs Qwen3.8 Max Prime's 1.0M. You can compare their actual outputs across 19 challenges on Rival to see how they differ in practice.

Which is better, o1 or Qwen3.8 Max Prime?

It depends on your use case. o1 and Qwen3.8 Max Prime each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 19 challenges so you can judge which fits your needs best.

How much does o1 cost compared to Qwen3.8 Max Prime?

o1 costs $15/M input tokens and Qwen3.8 Max Prime costs $4/M input tokens. Qwen3.8 Max Prime is $11.00/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 o1 and Qwen3.8 Max Prime on Rival?

This page shows a side-by-side comparison of o1 and Qwen3.8 Max Prime 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

o1vsQwen3.8 Max Prime

Qwen3.8 Max Prime is cheaper than o1 at $4/M vs $15/M input tokens.

o1 and Qwen3.8 Max Prime compared across 19 shared prompts
Spec	o1	Qwen3.8 Max Prime
Input price	$15/M tokens	$4/M tokens
Output price	$60/M tokens	$12/M tokens
Context window	128K tokens	1.0M tokens
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Dec 2024	Sep 2026

Side by side

Same prompt, both answers

Opening lines from 2 of the 19 prompts both answered. Formatting stripped, words untouched.

Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

o1820 words

RECOMMENDATION, PRICE TARGET, THESIS Recommendation: SHORT LedgerLift (LLLT). 12-month Price Target Range: $25–$35 (implying 25–45% downside). Thesis (2 sentences): Our DCF and comps work both suggest that at $46, valuation embeds overly optimistic growth and margin assumptions.

Read the full answer

Qwen3.8 Max Prime1,001 words

INVESTMENT COMMITTEE MEMO LedgerLift (LLLT) B2B Spend Management & AP Automation SaaS Date: [Current] Analyst: [Name] Sector: Enterprise Software RECOMMENDATION LONG 12-Month Price Target: $50–$58 Current: $46 Thesis: LedgerLift is a high-quality compounder (123% NRR, 18-month CAC payback, 92% subscription mix) trading…

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Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

o11,012 words

Below is a self‐contained “quick‐and‐dirty” 5‐year LBO illustration for “HarborTech Services,” based strictly on the data given. All figures in US$ millions unless noted.

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Qwen3.8 Max Prime673 words

HarborTech Services (HTS) – LBO Underwriting Memo Entry & Capital Structure Item Amount FY2025 EBITDA $120.0m Entry Multiple 12.0x Enterprise Value $1,440.0m Transaction Fees (2.0% of EV) $28.8m Total Uses $1,468.8m Term Loan (4.0x, 9.0% cash, 1.0% amort) $480.0m Mezzanine (1.5x, 12.0% cash + 2.0% PIK) $180.0m Sponsor…

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Our Verdict

Qwen3.8 Max Prime

o1Runner-up

Not enough votes to call it. On the specs, Qwen3.8 Max Prime has the edge: bigger model tier, newer, bigger context window.

Qwen3.8 Max Prime costs 5.0x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Input

$15.00

Output

$60.00

Qwen3.8 Max Prime

Input

$4.00

3.8× cheaper

Output

$12.00

5.0× cheaper

Qwen3.8 Max Prime is cheaper on both: 3.8× input, 5.0× output.

Where to run it

2 hosts

o11 host

HostInOutContextUptime

OpenAI$15.00 in$60.00 out200k100% up

Qwen3.8 Max Prime1 host

HostInOutContextUptime

Alibaba Cloud$4.00 in$12.00 out1M99.7% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Same prompt, both answers

Advanced Investment Memo (IC Memo)

Mini LBO Underwrite

Cost per 1M tokens

2 hosts

What we learned reading every model

Common questions

What is the difference between o1 and Qwen3.8 Max Prime?

Which is better, o1 or Qwen3.8 Max Prime?

How much does o1 cost compared to Qwen3.8 Max Prime?

How can I compare o1 and Qwen3.8 Max Prime on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Same prompt, both answers

Advanced Investment Memo (IC Memo)

Mini LBO Underwrite

Cost per 1M tokens

2 hosts

What we learned reading every model

Common questions

What is the difference between o1 and Qwen3.8 Max Prime?

Which is better, o1 or Qwen3.8 Max Prime?

How much does o1 cost compared to Qwen3.8 Max Prime?

How can I compare o1 and Qwen3.8 Max Prime on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages