Muse Spark 1.1
meta/muse-spark-1.1-20260709
Meta: Muse Spark 1.1 accepts text, image, video, and file inputs and generates text outputs. It has a context length of 1,048,576 tokens and supports tools and reasoning. Pricing is $1.25 per million input tokens and $4.25 per million output tokens.
- tool use
- structured outputs
- reasoning
At a glance
Specifications
What the API gives you
- Context window
- 1.0M tokens
- Max output
- 944K tokens
- Input price
- $1.25 / 1M tokens
- Output price
- $4.25 / 1M tokens
- Cache read
- $0.15 / 1M tokens
- Modalities
- text, image, video, file → text
- Knowledge cutoff
- —
- Released
- Apr 8, 2026
Measured evidence
Public benchmark record
- Design Arena Coding
- 1277 Elo2026-10-20
- Design Arena Full-stack Agent
- 1199 Elo2026-10-14
- Design Arena UI
- 1290 Elo2026-10-20
- Design Arena Web-app Agent
- 1206 Elo2026-10-20
- Design Arena Website
- 1270 Elo2026-10-20
- LiveBench Agentic Coding
- 58.5%2026-10-18
- LiveBench Coding
- 77.2%2026-10-18
- LiveBench Data Analysis
- 72.5%2026-10-18
- LiveBench Instruction Following
- 69.6%2026-10-18
- LiveBench Language
- 74.3%2026-10-18
- LiveBench Math
- 87.1%2026-10-18
- LiveBench Reasoning
- 87.7%2026-10-18
- LMArena Agent
- -6.62026-10-19
- LMArena Agent Bash Recovery
- -2.32026-10-08
- LMArena Agent Steerability
- -11.22026-10-19
- LMArena Agent Task Outcome
- -5.62026-10-19
- LMArena Agent Tool Hallucination
- 0.22026-10-19
- LMArena Creative Writing
- 1435 Elo2026-10-15
- LMArena Instruction Following
- 1457 Elo2026-10-15
- LMArena Long Query
- 1462 Elo2026-10-15
- LMArena Math
- 1484 Elo2026-10-15
- LMArena Text
- 1490 Elo2026-10-15
- LMArena Text Factuality
- 1462 Elo2026-10-15
- LMArena Vision
- 1280 Elo2026-10-19
- LMArena Vision Diagrams
- 1305 Elo2026-10-19
- LMArena Vision OCR
- 1295 Elo2026-10-19
- LMArena WebDev
- 1542 Elo2026-10-19
- LMArena WebDev Image-to-Web
- 1540 Elo2026-10-19
- SimpleQA Verified (Epoch AI)
- 57.8% ± 1.62026-08-31evaluated 2026-08-31
- tau2-bench (1.0.1)‡
- 40.5%2026-07-23xhigh effort, evaluated 2026-07-23
LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open. Design Arena uses blind human preference. ‡ Submitted scaffold plus model result. Compare the harness and effort settings, not only the model name.
Task evidence
How broad is the support?
Each status is exact to this model version and the selected task. Official release claims remain provisional.
- Best LLM for Business WritingEstablished evidence
100% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for Marketing CopyEstablished evidence
100% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for Chat & RoleplayEstablished evidence
100% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for Creative WritingEstablished evidence
100% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for Frontend & UIEstablished evidence
100% of intended weighted task evidence across 3 independent sources. 6 of 6 configured evaluation feeds currently have results.
- Best LLM for WritingEstablished evidence
100% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.
Show all 45 tasks
- Best LLM for Roleplay & CharacterEstablished evidence
100% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for a General AssistantEstablished evidence
100% of intended weighted task evidence across 3 independent sources. 6 of 6 configured evaluation feeds currently have results.
- Best LLM for Logic & Problem SolvingEstablished evidence
82% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Code CompletionEstablished evidence
79% of intended weighted task evidence across 2 independent sources. 3 of 3 configured evaluation feeds currently have results.
- Best LLM for Math & ReasoningEstablished evidence
76% of intended weighted task evidence across 2 independent sources. 7 of 7 configured evaluation feeds currently have results.
- Best LLM for Competition MathEstablished evidence
70% of intended weighted task evidence across 2 independent sources. 6 of 6 configured evaluation feeds currently have results.
- Best Open-Weight LLM for Self-HostingEstablished evidence
64% of intended weighted task evidence across 2 independent sources. 2 of 3 configured evaluation feeds currently have results.
- Best LLM for Image UnderstandingEstablished evidence
61% of intended weighted task evidence across 2 independent sources. 2 of 3 configured evaluation feeds currently have results.
- Best LLM for Document SummarizationEstablished evidence
60% of intended weighted task evidence across 2 independent sources. 5 of 6 configured evaluation feeds currently have results.
- Best LLM for SummarizationEstablished evidence
60% of intended weighted task evidence across 2 independent sources. 5 of 6 configured evaluation feeds currently have results.
- Best LLM for Tool & Function CallingEstablished evidence
58% of intended weighted task evidence across 2 independent sources. 6 of 7 configured evaluation feeds currently have results.
- Best LLM for Fast SummariesEstablished evidence
58% of intended weighted task evidence across 2 independent sources. 2 of 3 configured evaluation feeds currently have results.
- Best Value LLMEstablished evidence
58% of intended weighted task evidence across 2 independent sources. 2 of 3 configured evaluation feeds currently have results.
- Best LLM for Agentic CodingEstablished evidence
55% of intended weighted task evidence across 3 independent sources. 7 of 7 configured evaluation feeds currently have results.
- Best LLM for CodingEstablished evidence
53% of intended weighted task evidence across 3 independent sources. 7 of 7 configured evaluation feeds currently have results.
- Best LLM for Literary TranslationEstablished evidence
50% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Everyday TranslationEstablished evidence
50% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for TranslationEstablished evidence
50% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.
- Best Local LLM for CodingEstablished evidence
47% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for AI AgentsEstablished evidence
43% of intended weighted task evidence across 3 independent sources. 9 of 9 configured evaluation feeds currently have results.
- Best Cheap LLM for High VolumeEstablished evidence
40% of intended weighted task evidence across 2 independent sources. 2 of 3 configured evaluation feeds currently have results.
- Cheapest Capable LLMEstablished evidence
40% of intended weighted task evidence across 2 independent sources. 2 of 3 configured evaluation feeds currently have results.
- Best LLM for Autonomous AgentsEstablished evidence
36% of intended weighted task evidence across 2 independent sources. 6 of 6 configured evaluation feeds currently have results.
- Best LLM for JSON & Schema OutputEstablished evidence
35% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Structured Data ExtractionEstablished evidence
35% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Debugging & Code ReviewEstablished evidence
33% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Grounded RAGEstablished evidence
29% of intended weighted task evidence across 2 independent sources. 5 of 7 configured evaluation feeds currently have results.
- Best LLM for OCR & DocumentsProvisional evidence
65% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Structured-output eval or VLMEvalKit tasks. 3 of 5 configured evaluation feeds currently have results.
- Best LLM for Charts & DiagramsProvisional evidence
65% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Structured-output eval or VLMEvalKit tasks. 3 of 5 configured evaluation feeds currently have results.
- Best LLM for Vision & DocumentsProvisional evidence
60% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Structured-output eval or VLMEvalKit tasks. 4 of 6 configured evaluation feeds currently have results.
- Best LLM for Document ParsingProvisional evidence
58% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Structured-output eval or VLMEvalKit tasks. 3 of 5 configured evaluation feeds currently have results.
- Best LLM for Massive ContextProvisional evidence
47% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LongBench v2. 2 of 3 configured evaluation feeds currently have results.
- Best LLM for RAG & Long ContextProvisional evidence
39% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from FACTS Grounding or LMArena Search. 5 of 6 configured evaluation feeds currently have results.
- Best LLM for Hermes AgentProvisional evidence
29% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for OpenHandsProvisional evidence
29% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for GooseProvisional evidence
29% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for OpenClawProvisional evidence
29% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for High-Volume ExtractionProvisional evidence
21% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Route reliability or Structured-output eval. 1 of 3 configured evaluation feeds currently have results.
- Best LLM for Computer & Browser UseProvisional evidence
17% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or OSWorld Verified. 3 of 3 configured evaluation feeds currently have results.
Recommendation coverage
Where this model appears
Not currently included in a published recommendation. The task evidence panel above says exactly what is confirmed and what is still missing.
Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.