Meta: Muse Spark 1.3
Meta: Muse Spark 1.3 is a model from Meta that accepts text, image, video, and file inputs, with a context window of 1,048,576 tokens and a maximum completion length of 943,718 tokens. It supports tool use and reasoning. Whether it offers structured output and whether its weights are open are not specified, so buyers who need either should confirm before committing. Pricing is $1.25 per million input tokens and $4.25 per million output tokens; there is no free tier. Its blended benchmark score of 81.7 rests on a single independent benchmark, with an AI Index score of 79.4, so its standing is thinly evidenced and worth validating on your own workloads. It belongs on the shortlist for teams that need very long context, mixed-media inputs including video, and tool calling at a mid-range price, provided they accept limited benchmark coverage.
Benchmark results
Independent, published benchmarks. Blended score 81.7 across 1 benchmark, last refreshed 2026-10-19. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 79.4 |
- Model ID
- meta/muse-spark-1.3
- Vendor
- meta
- Released
- September 2026
- Tokenizer
- Other
- Input Modalities
- text, image, video, file
- Output Modalities
- text
- Max Output
- 943,718 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- yes
What it costs in practice
Computed from the current $1.25/M input and $4.25/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.04 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.84 |
| A month of a busy support chatbot | 5M in / 2M out | $14.75 |
Category rankings
Where Meta: Muse Spark 1.3 places across the 51 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #6 | Video SummarizationVideo · of 25 ranked | 150 |
| #12 | Screenshot DebuggingVision · of 25 ranked | 133 |
| #13 | Marketing CopyWriting · of 25 ranked | 121 |
| #13 | Standardized Test PrepEducation · of 25 ranked | 121 |
| #13 | Resume WritingBusiness · of 25 ranked | 113 |
| #13 | Chart & Graph ReadingVision · of 25 ranked | 137 |
| #16 | Regex WritingCode · of 25 ranked | 126 |
| #16 | Long-Document SummarizationWriting · of 25 ranked | 150 |
| #16 | Language TranslationWriting · of 25 ranked | 126 |
| #16 | Tutoring for KidsPersonal · of 25 ranked | 126 |
| #17 | Blog Post WritingWriting · of 25 ranked | 131 |
| #17 | Trip PlanningPersonal · of 25 ranked | 131 |
| #18 | Code DocumentationCode · of 25 ranked | 138 |
| #18 | Frontend Component DesignCode · of 25 ranked | 131 |
| #18 | Creative WritingWriting · of 25 ranked | 143 |
| #18 | Screenwriting & DialogWriting · of 25 ranked | 143 |
| #18 | Academic WritingWriting · of 25 ranked | 143 |
| #18 | Legal DraftingProfessional · of 25 ranked | 143 |
| #18 | Physics TutoringEducation · of 25 ranked | 133 |
| #18 | History TutoringEducation · of 25 ranked | 135 |
| #18 | OKRs & Strategic PlanningBusiness · of 25 ranked | 143 |
| #18 | Math ProofsResearch · of 25 ranked | 143 |
| #19 | Legal ResearchProfessional · of 25 ranked | 152 |
| #19 | Scientific ResearchProfessional · of 25 ranked | 152 |
| #19 | Long-Context Q&AAgents · of 25 ranked | 144 |
| #19 | Character RoleplayPersonal · of 25 ranked | 140 |
| #19 | Fiction CollaboratorPersonal · of 25 ranked | 152 |
| #19 | Literature ReviewResearch · of 25 ranked | 152 |
| #21 | Code ReviewCode · of 25 ranked | 147 |
| #21 | Code RefactoringCode · of 25 ranked | 148 |
| #21 | Contract ReviewProfessional · of 25 ranked | 156 |
| #21 | Essay GradingEducation · of 25 ranked | 147 |
| #21 | Sales / Cold EmailBusiness · of 25 ranked | 118 |
| #21 | Job Application DraftingBusiness · of 25 ranked | 118 |
| #21 | RAG PipelinesAgents · of 25 ranked | 148 |
| #21 | Journaling HelperPersonal · of 25 ranked | 118 |
| #21 | Recipe GenerationPersonal · of 25 ranked | 118 |
| #22 | Math TutoringEducation · of 25 ranked | 127 |
| #22 | Fitness CoachingPersonal · of 25 ranked | 119 |
| #23 | Bug FixingCode · of 25 ranked | 151 |
| #23 | CI/CD PipelinesCode · of 25 ranked | 129 |
| #23 | ETL ScriptingData · of 25 ranked | 139 |
| #23 | Medical Note SummarizationProfessional · of 25 ranked | 139 |
| #23 | Diagram ExtractionVision · of 25 ranked | 133 |
| #23 | Browser AutomationAgents · of 25 ranked | 139 |
| #23 | Scientific CodingResearch · of 25 ranked | 151 |
| #24 | OCR / Document ParsingData · of 25 ranked | 135 |
| #24 | Table Extraction from PDFsData · of 25 ranked | 135 |
| #25 | RFP ResponseBusiness · of 25 ranked | 152 |
| #25 | Agent WorkflowsAgents · of 25 ranked | 155 |
| #25 | Coding AgentsAgents · of 25 ranked | 155 |
Similar models
Meta: Muse Spark Open
Meta: Muse Wonder
Meta: Muse Spark 1.3 Contributor
Meta: Muse Spark 1.2 Contributor
Meta: Muse Spark 1.2
Meta: Muse Spark 1.1
Quick answers
- How much does Meta: Muse Spark 1.3 cost?
- $1.25 per million input tokens and $4.25 per million output tokens.
- What is Meta: Muse Spark 1.3's context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Meta: Muse Spark 1.3 support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Meta: Muse Spark 1.3 process images?
- Yes, it accepts image input.