Meta model product
Muse Spark Open
Muse Spark Open is an open-weight multimodal reasoning model from Meta for coding and long-horizon agentic work, with 816B total parameters, 42B active parameters, and a 1M-token context.
Updated Oct 23, 2026. Default version: Muse Spark Open
LLMBoard Score74.9Muse Spark Open
Coverage20%17 benchmark families
Context window1MTokens
Official input priceN/AOfficial price unavailable
Muse Spark Open Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Muse Spark Open Benchmark Results
Benchmark scores for Muse Spark Open.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkMCP Atlas | Score89.20% | Rank01 | Participants39 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkAA-Omniscience Index | Score25.00 points | Rank02 | Participants5 | Percentile75.00% | EvidenceC | Evaluated |
| BenchmarkJob Bench | Score61.80% | Rank02 | Participants9 | Percentile87.50% | EvidenceC | Evaluated |
| BenchmarkSWE Atlas - Codebase QnA | Score58.00% | Rank03 | Participants7 | Percentile66.67% | EvidenceC | Evaluated |
| BenchmarkZEROBench | Score0.50 points | Rank03 | Participants15 | Percentile85.71% | EvidenceC | Evaluated |
| BenchmarkHumanity's Last Exam (with tools) | Score61.00% | Rank03 | Participants5 | Percentile50.00% | EvidenceC | Evaluated |
| BenchmarkSciCode | Score58.50% | Rank04 | Participants31 | Percentile90.00% | EvidenceC | Evaluated |
| BenchmarkWorldVQA | Score49.40% | Rank04 | Participants7 | Percentile50.00% | EvidenceC | Evaluated |
| BenchmarkSimpleVQA | Score0.74 points | Rank05 | Participants17 | Percentile75.00% | EvidenceC | Evaluated |
| BenchmarkToolathlon-Verified | Score72.80% | Rank05 | Participants5 | Percentile0.00% | EvidenceC | Evaluated |
| BenchmarkBabyVision | Score80.20% | Rank06 | Participants16 | Percentile66.67% | EvidenceC | Evaluated |
| BenchmarkGDPval-AA | Score1,401.00 points | Rank10 | Participants17 | Percentile43.75% | EvidenceC | Evaluated |
| BenchmarkOSWorld-Verified | Score80.40% | Rank10 | Participants28 | Percentile66.67% | EvidenceC | Evaluated |
| BenchmarkArtificial Analysis | Score39.00% | Rank13 | Participants13 | Percentile0.00% | EvidenceC | Evaluated |
| BenchmarkTerminal-Bench 2.1 | Score76.40% | Rank27 | Participants48 | Percentile44.68% | EvidenceC | Evaluated |
| BenchmarkDeepSWE 1.1 | Score60.00% | Rank33 | Participants51 | Percentile36.00% | EvidenceC | Evaluated |
| BenchmarkGPQA | Score89.00% | Rank38 | Participants256 | Percentile85.49% | EvidenceC | Evaluated |
Muse Spark Open Arena Results
Preference and agent-evaluation results for the default version.
No Arena results
The default version does not have a matching Arena result yet.
Muse Spark Open Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- N/A
- Official provider
- N/A
- Lowest third-party
- From $1.25 input, $4.25 output per 1M via NanoGPT
- Tracked offerings
- 14
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderNanoGPT | Provider model IDmeta/muse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderKilo Gateway | Provider model IDmeta/muse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderOpenRouter | Provider model IDmeta/muse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderOllama Cloud | Provider model IDmuse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderNebius Token Factory | Provider model IDmeta-models/muse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderVercel AI Gateway | Provider model IDmeta/muse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderFireworks AI | Provider model IDaccounts/fireworks/models/muse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderMerge Gateway | Provider model IDmeta/muse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderRequesty | Provider model IDmuse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderPrime Inference | Provider model IDmeta/muse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderCloudflare AI Gateway | Provider model IDmeta/muse-spark-open | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderTogether AI | Provider model IDmeta-models/Muse-Spark-Open-816B-A42B | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderModal | Provider model IDmeta-models/Muse-Spark-Open-816B-A42B | Regionglobal | Input / 1M$1.25 | Output / 1M$4.25 | Context1M | Updated |
| ProviderVenice AI | Provider model IDmuse-spark-open | Regionglobal | Input / 1M$1.56 | Output / 1M$5.31 | Context1M | Updated |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Muse Spark Open Runtime Performance
Provider-specific output speed and catalog latency for Muse Spark Open. Runtime does not affect the capability score.
No runtime data
No provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Muse Spark Open Specifications
Technical details for the model's default version.
- Version
- Muse Spark Open
- Released
- Oct 15, 2026
- Knowledge cutoff
- Unknown
- Parameters
- 816B
- Context window
- 1M
- Max output
- 1M
- Inputs
- audio, image, text, video
- Outputs
- text
- Open weights
- Yes
- License
- Muse Model License
Muse Spark Open Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionMuse Spark Open | Released | LLMBoard74.86 | Parameters816B | Context1M | Max output1M | Open weightsYes | LicenseMuse Model License |
Models similar to Muse Spark Open
Recommendations prioritize the same model type and family, then the closest LLMBoard score.
ME
Muse Spark 1.2
Meta
ME
Muse Wonder
Meta
ME
Muse Spark
Meta
ME
Muse Spark 1.1
Meta
ME
Muse Wonder Full
Meta
ME
Muse Spark 1.3
Meta
What is Muse Spark Open?
Key information about Muse Spark Open and its available data.
Muse Spark Open is an 816B-total-parameter, 42B-active-parameter open-weight multimodal reasoning model from Meta. It is designed for coding and long-horizon agentic work and supports a 1M-token context.
Data as of 2026-10-22.
FAQ
Common questions about Muse Spark Open.
When was Muse Spark Open released?
Muse Spark Open's default version was released on Oct 15, 2026.
How much does Muse Spark Open cost?
No official standard PAYG price is currently available for Muse Spark Open. The lowest tracked third-party offer starts at $1.25 input and $4.25 output via NanoGPT.
Who created Muse Spark Open?
Muse Spark Open was created by Meta.
What is the context window for Muse Spark Open?
The default version has a 1M token context window.
Is Muse Spark Open open weight?
Yes. The default version is marked as open weight under Muse Model License.
How many API providers offer Muse Spark Open?
14 provider offerings are linked to the default version.