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

Claude Opus 5.5vsMiMo-V2.5-Pro

MiMo-V2.5-Pro is cheaper than Claude Opus 5.5 at $1/M vs $4/M input tokens.

Claude Opus 5.5 and MiMo-V2.5-Pro compared across 19 shared prompts
SpecClaude Opus 5.5MiMo-V2.5-Pro
Input price$4/M tokens$1/M tokens
Output price$20/M tokens$3/M tokens
Context window1.0M tokens1.0M tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedSep 2026Apr 2026
Side by side

Same prompt, both answers

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

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-V2.5-Pro203 words
Dish Name: Pantry Raid Pasta Estimated Time: 10 min prep / 15 min cook Ingredients 250g spaghetti (or any pasta) 3 cloves garlic, thinly sliced 3 tbsp olive oil 1 tsp crushed red pepper flakes 1 tsp smoked paprika 1/2 cup grated Parmesan cheese (or any hard cheese) Salt & black pepper to taste Instructions Cook the…
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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-V2.5-Pro773 words
"Ephemeral Reef: A Dialogue Between Sea and Forest" Conceptual Narrative This dish explores the convergence of two profound umami sources—the briny, ephemeral sweetness of fresh sea urchin and the deep, earthy complexity of fermented black truffle—through the lens of a submerged coral reef meeting a misty forest floor.
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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-V2.5-Pro760 words
HarborTech Services — LBO Underwrite Sources & Uses $m Uses Enterprise Value (12.0× $120m) 1,440.0 Transaction Fees (2.0%) 28.8 Total Uses 1,468.8 Sources Term Loan (4.0× EBITDA) 480.0 Mezzanine (1.5× EBITDA) 180.0 Total Debt 660.0 44.9% Sponsor Equity 808.8 55.1% Year-by-Year Operating Model (FY2026–FY2030) All…
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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-V2.5-Pro3,115 words
The Transistor in 1920: A Counterfactual History Through 1980 This is one of the richest counterfactuals in technological history because the transistor wasn't just an incremental improvement—it was the foundational enabler of the entire digital age.
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Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

Claude Opus 5.54,420 words
Contractor-Side Review of the Software Consulting Agreement Overall assessment: This agreement is heavily one-sided. Nearly every clause shifts risk, cost, or control to the Contractor, and several provisions interact to create compounding exposure.
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MiMo-V2.5-Pro1,249 words
This contract is heavily skewed in favor of the client and contains several clauses that could be exploited to the significant detriment of the contractor. Here is a breakdown of the problematic clauses, suggested modifications, and the legal reasoning. 1.
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Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

Claude Opus 5.52,280 words
Architecture Review: Real-Time Collaborative Editor The most serious problems cluster in three areas: the sync model (client-clock LWW), cross-server propagation (per-server WebSockets with DB polling), and the CDN/auth layer, which can leak data between users. Issues are grouped by area below.
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MiMo-V2.5-Pro1,787 words
Architecture Analysis: Failure Modes, Race Conditions & Bottlenecks This is a thorough red-pen review. There are some genuinely critical issues here — several of which would cause silent data loss in production.
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Our Verdict
Claude Opus 5.5
Claude Opus 5.5
MiMo-V2.5-Pro
MiMo-V2.5-Pro

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

MiMo-V2.5-Pro costs 6.7x less per token.

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-V2.5-Pro
Input
$1.00
4.0× cheaper
Output
$3.00
6.7× cheaper

MiMo-V2.5-Pro is cheaper on both: 4.0× input, 6.7× output.

Where to run it

11 hosts, cheapest first

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-V2.5-Pro7 hosts
HostInOutContextUptime
Xiaomifp8$0.43 in·$0.87 out·1M·98.4% upDDigitalOcean$0.48 in·$1.80 out·262k·99.7% upNNovita$0.48 in·$0.96 out·1M·96% upGGMI Cloudbf16degraded$0.30 in·$0.61 out·1.1M·93% upDDeepInfrafp8degraded$0.39 in·$1.17 out·1M·87.9% upAAtlasCloudfp8degraded$0.43 in·$0.87 out·1M·92.9% up
1 more hostFewer hosts
SStreamLakedegraded$0.52 in·$1.04 out·1M·92.4% up

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-V2.5-Pro is developed by Xiaomi. Claude Opus 5.5 has a 1.0M token context window vs MiMo-V2.5-Pro's 1.0M. 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-V2.5-Pro 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-V2.5-Pro costs $1/M input tokens. MiMo-V2.5-Pro is $3.00/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-V2.5-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.

Keep exploring

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Same lab, same size, long tail

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MiMo-V2.5-Pro logoMiMo-V2.6-Pro logo
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MiMo-V2.5-Pro vs MiMo-V2.6-FlashSame lab
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MiMo-V2.5-Pro vs Claude Sonnet 4Cross-provider
MiMo-V2.5-Pro logoClaude Sonnet 4.6 logo
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MiMo-V2.5-Pro logoClaude Sonnet 5 logo
MiMo-V2.5-Pro vs Claude Sonnet 5Cross-provider
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Claude Opus 5.5 vs OpenAI Codex MiniNew provider

Model pages

Claude Opus 5.5 logo
Claude Opus 5.519 outputs, specs and price
MiMo-V2.5-Pro logo
MiMo-V2.5-Pro57 outputs, specs and price
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