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Head-to-head comparison

Muse Spark 1.2 Contributor vs o3

Muse Spark 1.2 Contributor (Meta) and o3 (OpenAI) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 22 August 2026

As of 22 August 2026, o3 holds the stronger ModelCap Index position (#38 vs #39); Muse Spark 1.2 Contributor is 40× cheaper per output token ($0.20/1M vs $8.00/1M); and Muse Spark 1.2 Contributor offers the longer context window (1M vs 200K tokens).

Which should you choose?

Choose Muse Spark 1.2 Contributor if…

  • API cost matters — $0.20/1M output tokens against $8.00/1M, about 40× cheaper.
  • your workload is prompt-heavy — input tokens cost $0.10/1M against $2.00/1M.
  • you need the longer context window — 1M tokens against 200K.
  • you want the more recently listed model — Muse Spark 1.2 Contributor was listed 21 August 2026, o3 16 April 2025.

Choose o3 if…

  • you want the stronger overall ModelCap Index position — #38 against #39 (55.7 vs 54.7 points).

Muse Spark 1.2 Contributor vs o3: specs, pricing and context

Specification comparison of Muse Spark 1.2 Contributor and o3
FieldMuse Spark 1.2 ContributorMetao3OpenAI
ModelCap Index position#39#38
Index score54.755.7
EvidenceEstimatedMeasured
Input price / 1M tokens$0.10$2.00
Output price / 1M tokens$0.20$8.00
Context window1M tokens200K tokens
Max output tokens—100K
API providers listed11
Weight accessAPI onlyAPI only
Input modalitiesText, Image, Video, File, AudioImage, Text, File
First listed21 August 202616 April 2025
PublisherMetaOpenAI

Evidence: publisher corpus prior · leave-one-anchor-out calibrated · 4 public benchmark observations across 4 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Muse Spark 1.2 Contributor vs o3

Public benchmark boards where Muse Spark 1.2 Contributor or o3 has a published result
BoardMuse Spark 1.2 Contributoro3Leads
Arena codingArena (LMArena)—14601453–1466Only one result
ARC-AGI-2ARC Prize Foundation—6.5%HighOnly one result
SWE-benchSWE-bench (Princeton / SWE-agent team)—58.4%Only one result
BFCL V4UC Berkeley (Gorilla)—63.1PromptOnly one result
Artificial Analysis Intelligence IndexArtificial Analysis—31.1intelligence-indexOnly one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

Muse Spark 1.2 Contributor vs o3: common questions

Is Muse Spark 1.2 Contributor better than o3?

o3 ranks higher on the ModelCap Index as of 22 August 2026: #38 against #39. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it.

Is Muse Spark 1.2 Contributor cheaper than o3?

Muse Spark 1.2 Contributor is cheaper on output tokens: $0.20/1M against $8.00/1M. Input tokens are $0.10/1M for Muse Spark 1.2 Contributor and $2.00/1M for o3. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens.

Which has the bigger context window, Muse Spark 1.2 Contributor or o3?

Muse Spark 1.2 Contributor has the larger context window: 1M tokens against 200K.

Which is better for coding, Muse Spark 1.2 Contributor or o3?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are Muse Spark 1.2 Contributor and o3 open-weight models?

Muse Spark 1.2 Contributor: API only. o3: API only. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run Muse Spark 1.2 Contributor and o3?

ModelCap currently lists 1 API provider for Muse Spark 1.2 Contributor and 1 for o3, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Muse Spark 1.2 Contributor vs o3 comparison?

Every figure comes from the sealed ModelCap dataset published 22 August 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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