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  5. Claude Opus 5.5vsMiMo-V2-Flash
Updated Sep 2026

Claude Opus 5.5vsMiMo-V2-Flash

MiMo-V2-Flash is cheaper than Claude Opus 5.5 at $0/M vs $4/M input tokens.

Claude Opus 5.5 and MiMo-V2-Flash compared across 19 shared prompts
SpecClaude Opus 5.5MiMo-V2-Flash
Input price$4/M tokensFree
Output price$20/M tokensFree
Context window1.0M tokens262K tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedSep 2026Dec 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 19 prompts both answered. Formatting stripped, words untouched.

Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

Claude Opus 5.52,253 words
"Hive & Tide" Langoustine, Beeswax, White Chocolate & Oscietra Caviar, Hay-Baked Celeriac, Fermented Green Strawberry, Sea Buckthorn I. The Concept Most coastal menus celebrate the meeting of sea and land. This dish is about a stranger, quieter meeting: the meadow and the seabed, the bee and the langoustine.
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MiMo-V2-Flash1,713 words
Of course. Here is an innovative recipe for a multi-component dish designed to meet the exacting standards of a Michelin 3-star restaurant. Dish Title: "Boreal Echo" Conceptual Narrative: "Boreal Echo" is a culinary meditation on the forest floor after a cleansing rain.
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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) –…

Claude Opus 5.5900 words
HarborTech Services: 5-Year LBO Underwriting Conventions: $m. Interest is charged on beginning-of-year balances, which avoids circularity. Term Loan (TL) amortization is 1% of the original $480m, or $4.8m per year. Mezz PIK accrues to principal. All FCF after mandatory debt service sweeps to the TL.
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MiMo-V2-Flash586 words
Simplified Year-by-Year Model (FY2026–FY2030) Entry (FY2025 Close) Enterprise Value (EV): $120m * 12.0x = $1,440m Transaction Fees: 2.0% * $1,440m = $28.8m (equity funded) Total Equity Required: $1,440m (purchase) + $28.8m (fees) = $1,468.8m Debt Issued: $120m * 5.5x = $660m (Term Loan $480m, Mezz $180m) Initial Debt…
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Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

Claude Opus 5.5300 words
Midnight Silk Noodles Creamy, tangy peanut noodles with a gentle kick, ready faster than takeout. Serves: 2 Prep time: 5 minutes Cook time: 10 minutes Total time: 15 minutes The 7 Ingredients 8 oz (225 g) spaghetti (or any long noodle) ¼ cup creamy peanut butter 3 tablespoons soy sauce 1 tablespoon honey (or sugar) 1…
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MiMo-V2-Flash370 words
Here is a recipe for a rich, savory dish that tastes like it took hours to make, but comes together with just a few staples. Dish Name: The Midnight Pantry Pasta Flavor Profile: Savory, Garlicky, and Umami-rich Total Time: 15–20 minutes The 7 Ingredients Pasta: (Spaghetti or Linguine work best) Butter: (Salted or…
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Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

Claude Opus 5.53,435 words
The Transistor in 1920: A Counterfactual Through 1980 First, a Reality Check on the Premise A transistor "invented" in 1920 would not have changed the world in 1920. The actual 1947 transistor rested on three foundations that did not exist yet: Quantum theory of solids.
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MiMo-V2-Flash1,595 words
Of course. This is a fascinating counterfactual. Here is a detailed tracing of the likely implications if the transistor had been invented in 1920. The Premise: The "1920 Transistor" For this scenario to be plausible, we must assume a "Garage Inventor" or a small, well-funded university lab in the US, Germany, or the…
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Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

Claude Opus 5.51,853 words
The Next 48 Hours: CEO Action Plan The Core Decision We disclose. The question is how to do it well, not whether. Before the schedule, here are the three facts that drive every decision below. 1. The harm is concrete.
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MiMo-V2-Flash1,042 words
This is a crisis that threatens the company’s existence, but the only path to long-term survival is radical transparency and immediate prioritization of patient safety over short-term stock performance. The "wait for more data" argument is a trap.
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Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

Claude Opus 5.51,442 words
How Large Language Models Work: Three Explanations For the Experienced Software Engineer Think of an LLM as a single, very large pure function: f(tokens[0..n]) → probability distribution over tokens[n+1]. Text is chunked into tokens (roughly word fragments, from a vocabulary of about 100k).
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MiMo-V2-Flash893 words
Of course. Here is how to explain LLMs to each of those three audiences. For the Experienced Software Engineer (Skeptical, focused on implementation and practical limits) Think of a large language model not as a "brain" but as an incredibly sophisticated API that you can call with a context string.
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Our Verdict
Claude Opus 5.5
Claude Opus 5.5
MiMo-V2-Flash
MiMo-V2-Flash

Not enough votes to call it. On the specs, nothing separates them.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Opus 5.5
Input
$4.00
Output
$20.00
MiMo-V2-Flash
Input
$0.000
Output
$0.000
Where to run it

4 hosts

Claude Opus 5.54 hosts
HostInOutContextUptime
Amazon Bedrock$4.00 in·$20.00 out·1M·99.8% upAzure AI Foundry$4.00 in·$20.00 out·1M·100% upAnthropic$4.00 in·$20.00 out·1M·100% upGoogle Vertex AI$4.00 in·$20.00 out·1M·100% up
MiMo-V2-Flash

No hosts listed on OpenRouter.

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

Research

What we learned reading every model

FAQ

Common questions

Claude Opus 5.5 is developed by Anthropic while MiMo-V2-Flash is developed by Xiaomi. Claude Opus 5.5 has a 1.0M token context window vs MiMo-V2-Flash's 262K. You can compare their actual outputs across 19 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Opus 5.5 and MiMo-V2-Flash 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.

Claude Opus 5.5 costs $4/M input tokens and MiMo-V2-Flash costs $0/M input tokens. MiMo-V2-Flash is $4.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Claude Opus 5.5 and MiMo-V2-Flash 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.

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Model pages

Claude Opus 5.5 logo
Claude Opus 5.519 outputs, specs and price
MiMo-V2-Flash logo
MiMo-V2-Flash59 outputs, specs and price
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