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AI Choice Engine

Model comparison

Muse Spark 1.2 vs Xiaomi MiMo-V2.5-Pro

Meta against Xiaomi, compared on context, price, and verified benchmark results.

Catalog record checked September 26, 2026Individual provider fields may changeEvidence confidence: High — see receipts below

Meta

Muse Spark 1.2

Frontier

vs

Xiaomi

Xiaomi MiMo-V2.5-Pro

Frontier · Open weights

AI model capability comparison
SpecificationMuse Spark 1.2Xiaomi MiMo-V2.5-Pro
ProviderMetaXiaomi
TierFrontierFrontier
Context windowWinner: 1.05M1M
Max outputNot verifiedUnverifiedNot verifiedUnverified
Input / 1M tokens$1.25Winner: $0.435
Output / 1M tokens$4.25Winner: $0.87
WeightsClosedOpen
ParametersMeta frontier model1.02T total / 42B active (MoE)
Reasoning levelsminimal, low, medium, high, xhigh, maxlow, high, max
Modalitiestext, image, video, audio, pdftext, image
LicenseNot disclosedUnverifiedMIT
API model idmuse-spark-1.2mimo-v2-5-pro
ReleasedAugust 5, 2026April 22, 2026
Artificial Analysis Intelligence Index [xhigh] (2026-09-26)39.6Not verifiedUnverified
Artificial Analysis Intelligence Index (2026-09-26)Not verifiedUnverified26

Prices are USD per million tokens at standard rates, excluding batch and caching discounts. Bold indicates the better figure where one is objectively better. Values we could not confirm from the provider are shown as “Not verified” rather than estimated.

Benchmark receipts

Where each score comes from, and how far it can be compared across models.

  • 2026-09-26
    Artificial Analysis

    Composite index blending reasoning, knowledge, and coding evals into one 0–100 score.

    Comparable with caveatOnly same-version scores are comparable. v4.3.2 was rebaselined (the top score fell from 66 on v4.1.1 to ~58), so v4.1.1 figures must not be compared with v4.3.2 figures — check measuredAt.

Pricing tiers

Muse Spark 1.2: $1.25/$4.25 per MTok on Meta's Model API (Standard tier shared with Muse Spark 1.3; cached input $0.15). Closed weights.

Xiaomi MiMo-V2.5-Pro: $0.435/$0.87 per MTok (cache hit $0.0036) after Xiaomi's 2026-05-27 V2.5 price cut — the V2.6 launch post says pricing is unchanged from V2.5. The earlier $1/$3 list and its >256K tier no longer apply. Open weights (MIT). 1.02T/42B active MoE.

FrontierRecord checked September 26, 2026

Muse Spark 1.2

Muse Spark 1.2 is Meta's closed frontier model until the 1.3 refresh (2026-09-02) — still served and ranked in the LMArena text top 10 as of mid-2026.

Best for

  • Frontier reasoning
  • Meta ecosystem
  • Agentic work

Watch out

Closed-weights (unlike Llama 4); Meta's post-Llama-4 frontier branding.

FrontierOpen weightsRecord checked September 26, 2026

Xiaomi MiMo-V2.5-Pro

MiMo-V2.5-Pro is Xiaomi's open-weight (MIT) 1.02T MoE with native multimodal and a 1M context.

Best for

  • Open-weight frontier
  • Multimodal
  • Long-context

Watch out

Verify weights/pricing on your endpoint.

When the cheaper one wins

Xiaomi MiMo-V2.5-Pro is cheaper on output at $0.87 per million tokens against $4.25 for Muse Spark 1.2 — about 4.9×. Use the cheaper tier for classification, extraction, summarisation, and any task where the expensive model’s extra score does not change the accepted output. The expensive one only pays if your hardest task actually fails on the cheap tier. These are standard-tier API rates, excluding batch and cache discounts.

Run the model picker

Evidence confidence: High

How strong and complete the evidence behind this comparison is — not a prediction of which model is better.

  • Pricing verified on both sides — Input and output rates are verified for both models.
  • 4/5 core specs verified on both sides — Not published for at least one side: max output.
  • 1 shared named benchmark with differing scores — Measured on: Artificial Analysis Intelligence Index.
  • Verified within the last 90 days — Newest catalog check was 2 days ago.
  • Both models carry source citations — Each side has at least two catalog sources on record.

Source receipts

Each catalog figure was checked against the provider or an independent second source on the date shown.

Related comparisons

Diving deeper on one model? Muse Spark 1.2 · Xiaomi MiMo-V2.5-Pro

Common questions

Muse Spark 1.2 vs Xiaomi MiMo-V2.5-Pro

Answered from the verified figures on this page rather than general guidance.

Is Muse Spark 1.2 or Xiaomi MiMo-V2.5-Pro cheaper for input?
Xiaomi MiMo-V2.5-Pro is cheaper at $0.435 per million input tokens, against $1.25 for Muse Spark 1.2 — roughly 2.9× the price. Output tokens usually dominate a real bill, so weigh the output rate more heavily than the input rate. These are base rates; Muse Spark 1.2 has tiered pricing: $1.25/$4.25 per MTok on Meta's Model API (Standard tier shared with Muse Spark 1.3; cached input $0.15). Closed weights. Xiaomi MiMo-V2.5-Pro has tiered pricing: $0.435/$0.87 per MTok (cache hit $0.0036) after Xiaomi's 2026-05-27 V2.5 price cut — the V2.6 launch post says pricing is unchanged from V2.5. The earlier $1/$3 list and its >256K tier no longer apply. Open weights (MIT). 1.02T/42B active MoE.
Is Muse Spark 1.2 or Xiaomi MiMo-V2.5-Pro cheaper for output?
Xiaomi MiMo-V2.5-Pro is cheaper at $0.87 per million output tokens, against $4.25 for Muse Spark 1.2 — roughly 4.9× the price. Output tokens usually dominate a real bill, so weigh the output rate more heavily than the input rate. These are base rates; Muse Spark 1.2 has tiered pricing: $1.25/$4.25 per MTok on Meta's Model API (Standard tier shared with Muse Spark 1.3; cached input $0.15). Closed weights. Xiaomi MiMo-V2.5-Pro has tiered pricing: $0.435/$0.87 per MTok (cache hit $0.0036) after Xiaomi's 2026-05-27 V2.5 price cut — the V2.6 launch post says pricing is unchanged from V2.5. The earlier $1/$3 list and its >256K tier no longer apply. Open weights (MIT). 1.02T/42B active MoE.
Which has the larger context window, Muse Spark 1.2 or Xiaomi MiMo-V2.5-Pro?
Muse Spark 1.2 accepts 1.05M tokens against 1M for Xiaomi MiMo-V2.5-Pro. This only matters if you routinely send very long documents or large codebases.
Do Muse Spark 1.2 and Xiaomi MiMo-V2.5-Pro support the same reasoning levels?
Muse Spark 1.2 exposes minimal, low, medium, high, xhigh, max, while Xiaomi MiMo-V2.5-Pro exposes low, high, max.
Should I use Muse Spark 1.2 or Xiaomi MiMo-V2.5-Pro?
Both sit in the frontier tier, so the choice usually comes down to price and context rather than capability. Muse Spark 1.2 suits frontier reasoning; Xiaomi MiMo-V2.5-Pro suits open-weight frontier.
Can I self-host Muse Spark 1.2 or Xiaomi MiMo-V2.5-Pro?
Xiaomi MiMo-V2.5-Pro publishes open weights, but self-hosting and third-party provider access depend on the licence, hardware, serving support, and availability. Muse Spark 1.2 is a closed model whose supported access paths are controlled by its provider.

Next step

Choosing between them

The verified figures that separate this pair, computed from the catalog rather than restated boilerplate.

  • Input price: Xiaomi MiMo-V2.5-Pro costs $0.435 per 1M tokens versus $1.25 for Muse Spark 1.2 — a 2.9x difference at the headline tier.
  • Context: Muse Spark 1.2 takes 1.05M against 1M for Xiaomi MiMo-V2.5-Pro — only decisive if your prompts approach the smaller window.
  • Measured capability: Muse Spark 1.2 leads Artificial Analysis Intelligence Index 39.6 to 26 (measured 2026-09-26).
  • Deployment: Xiaomi MiMo-V2.5-Pro publishes weights you can self-host; the other is API-only.
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