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Comparison · 2 models · Updated Nov 2, 2026

Grok 4.7 vs Muse Spark Open

Muse Spark Open comes out ahead, 68 to 64 on our weighted score, and it is the cheaper option too.

  1. xAI

    Grok 4.7

    Released Sep 21, 2026New

    64/100
    • ECI154.6
    • Price$2.00 / $6.00
    • Context500K
    Full specs Remove Grok 4.7
  2. Our pick

    Meta

    Muse Spark Open

    Released Oct 15, 2026New

    68/100
    • ECI155.1
    • Price$1.25 / $4.25
    • Context1.05M
    Full specs Remove Muse Spark Open

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Muse Spark Open is our pick

Muse Spark Open is the better all-round choice, scoring 68/100 against Grok 4.7 (64). It leads on price and context window. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityMuse Spark OpenCapabilities Index (ECI): Muse Spark Open 155.1 · Grok 4.7 154.6
  • Lowest priceMuse Spark OpenMuse Spark Open $2.00 · Grok 4.7 $3.00 per 1M tokens (3:1 blend)
  • Longest contextMuse Spark OpenMuse Spark Open 1,048,576 · Grok 4.7 500,000 tokens
  • Widest inputsMuse Spark OpenGrok 4.7: Text, Images, PDFs · Muse Spark Open: Text, Images, Audio, Video
  • Self-hostingMuse Spark OpenPublishes downloadable weights (Muse Model License)
How the score is built
MeasureWeightGrok 4.7Muse Spark Open
CapabilityCapabilities Index (ECI)50%8283
Price25%2634
Inputs & features15%8080
Context window10%4861
Overall100%64/10068/100
02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

Grok 4.7 vs Muse Spark Open specifications side by side
SpecificationGrok 4.7xAIMuse Spark OpenMeta
Capability
Capabilities Index (ECI)154.6155.1 (best)
ECI rank#43 of 165#39 of 165 (best)
GPQA DiamondGraduate-level science questions92.7% (best)88.6%
FrontierMath Tiers 1–3Research-level mathematics53.0%69.8% (best)
OTIS Mock AIME 2024–2025Competition mathematics98.1%98.1%
SimpleQA VerifiedShort factual questions56.0%56.6% (best)
Price per million tokens
Input$2.00$1.25 (best)
Output$6.00$4.25 (best)
Cached input$0.50—
Blended (3:1)$3.00$2.00 (best)
Long-context rateOver 200K: $4.00 / $12.00Same rate
Price sourceOfficial xAI APIMedian of 16 providers
Limits
Context window500,000 tokens1,048,576 tokens (best)
Max output500,000 tokens (best)131,072 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesNo
AudioNoYes
VideoNoYes
ReasoningYeslow · medium · high · xhighYes
Tool callingYesYes
Structured outputYesNo
Availability
WeightsProprietaryOpenMuse Model License
API model IDgrok-4.7—
API providers27 (best)16
ReleasedSep 21, 2026Oct 15, 2026
Knowledge cutoffMay 2026Jan 4, 2026
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • Grok 4.7$32.00
  • Muse Spark Open$21.00
04 — Questions

Which should you choose?

Which is better: Grok 4.7 or Muse Spark Open?

Muse Spark Open is the better all-round choice, scoring 68/100 against Grok 4.7 (64). It leads on price and context window. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, Grok 4.7 or Muse Spark Open?

Muse Spark Open is cheaper at $1.25 input / $4.25 output per million tokens (median across 16 API providers). Grok 4.7 costs $2.00 input / $6.00 output per million tokens (official xAI API price). At a typical mix of three input tokens to one output token, that is $2.00 per million tokens for Muse Spark Open versus $3.00 for Grok 4.7 (1.5× as much).

Which scores higher on benchmarks?

Muse Spark Open scores higher on the Capabilities Index (ECI): Muse Spark Open 155.1 (#39 of 165) and Grok 4.7 154.6 (#43 of 165). The confidence ranges of the top two overlap (153.1–157.3 vs 152.6–157.1), so treat the gap as small. On individual benchmarks: GPQA Diamond — Grok 4.7 92.7%, Muse Spark Open 88.6%; FrontierMath Tiers 1–3 — Muse Spark Open 69.8%, Grok 4.7 53.0%; OTIS Mock AIME 2024–2025 — Grok 4.7 98.1%, Muse Spark Open 98.1%; SimpleQA Verified — Muse Spark Open 56.6%, Grok 4.7 56.0%.

Which is better for coding?

There are no published SWE-bench Verified results for Grok 4.7 and Muse Spark Open yet, so there is no like-for-like coding score. On overall capability, Muse Spark Open leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.

Which has the bigger context window?

Muse Spark Open has the largest context window at 1,048,576 tokens, against 500,000 for Grok 4.7. Maximum output per response: Grok 4.7 up to 500,000, Muse Spark Open up to 131,072 tokens.

Which can read images, PDFs, audio or video?

Grok 4.7 accepts text, images and PDFs; Muse Spark Open accepts text, images, audio and video. Muse Spark Open handles the widest range of inputs.

Are any of these open source?

Muse Spark Open publishes its weights (Muse Model License) and can be self-hosted; Grok 4.7 is proprietary.

Which is newer?

Muse Spark Open is the newest, released Oct 15, 2026. Grok 4.7 came out Sep 21, 2026. Knowledge cutoff: Grok 4.7 May 2026, Muse Spark Open Jan 4, 2026.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.

05 — Keep comparing

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