Muse Spark 1.2

meta/muse-spark-1.2-20260805

Meta: Muse Spark 1.2 is a multimodal AI model from Meta that accepts text, image, video, file, and audio inputs to generate text outputs. It has a context length of 1,048,576 tokens, supports tools and reasoning, and is not open weights.

  • tool use
  • structured outputs
  • reasoning

At a glance

providermeta
releasedAug 5, 2026
context1.0M
input / M$1.25

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, audio → text
Knowledge cutoff
Released
Aug 5, 2026

Measured evidence

Public benchmark record

Design Arena Coding
1350 Elo2026-08-09
Design Arena Coding
1347 Elo2026-08-14
Design Arena Coding
1353 Elo2026-08-10
Design Arena Coding
1340 Elo2026-08-18
Design Arena Coding
1343 Elo2026-08-21
Design Arena Coding
1341 Elo2026-08-15
Design Arena Coding
1353 Elo2026-08-11
Design Arena Coding
1349 Elo2026-08-12
Design Arena Coding
1338 Elo2026-08-19
Design Arena Coding
1347 Elo2026-08-13
Design Arena Coding
1341 Elo2026-08-27
Design Arena Coding
1331 Elo2026-09-05
Design Arena Coding
1338 Elo2026-08-20
Design Arena Coding
1340 Elo2026-08-16
Design Arena Coding
1340 Elo2026-08-17
Design Arena Coding
1343 Elo2026-08-22
Design Arena Coding
1344 Elo2026-08-23
Design Arena Coding
1340 Elo2026-08-28
Design Arena Coding
1344 Elo2026-08-24
Design Arena Coding
1327 Elo2026-09-16
Design Arena Coding
1343 Elo2026-08-25
Design Arena Coding
1343 Elo2026-08-26
Design Arena Coding
1330 Elo2026-09-06
Design Arena Coding
1341 Elo2026-08-29
Design Arena Coding
1341 Elo2026-08-30
Design Arena Coding
1330 Elo2026-09-07
Design Arena Coding
1341 Elo2026-08-31
Design Arena Coding
1341 Elo2026-09-01
Design Arena Coding
1340 Elo2026-09-02
Design Arena Coding
1327 Elo2026-09-17
Design Arena Coding
1331 Elo2026-09-08
Design Arena Coding
1336 Elo2026-09-03
Design Arena Coding
1335 Elo2026-09-04
Design Arena Coding
1327 Elo2026-09-18
Design Arena Coding
1328 Elo2026-09-09
Design Arena Coding
1328 Elo2026-09-10
Design Arena Coding
1327 Elo2026-09-11
Design Arena Coding
1326 Elo2026-09-12
Design Arena Coding
1327 Elo2026-09-19
Design Arena Coding
1326 Elo2026-09-13
Design Arena Coding
1326 Elo2026-09-14
Design Arena Coding
1327 Elo2026-09-15
Design Arena Coding
1326 Elo2026-09-20
Design Arena UI
1371 Elo2026-08-09
Design Arena UI
1349 Elo2026-08-14
Design Arena UI
1351 Elo2026-08-10
Design Arena UI
1343 Elo2026-08-18
Design Arena UI
1353 Elo2026-08-11
Design Arena UI
1345 Elo2026-08-15
Design Arena UI
1348 Elo2026-08-12
Design Arena UI
1343 Elo2026-08-13
Design Arena UI
1343 Elo2026-08-19
Design Arena UI
1349 Elo2026-08-27
Design Arena UI
1345 Elo2026-08-16
Design Arena UI
1343 Elo2026-08-20
Design Arena UI
1344 Elo2026-08-17
Design Arena UI
1351 Elo2026-09-05
Design Arena UI
1344 Elo2026-08-21
Design Arena UI
1346 Elo2026-08-22
Design Arena UI
1349 Elo2026-08-23
Design Arena UI
1348 Elo2026-08-28
Design Arena UI
1353 Elo2026-08-24
Design Arena UI
1350 Elo2026-08-25
Design Arena UI
1351 Elo2026-08-26
Design Arena UI
1352 Elo2026-09-06
Design Arena UI
1326 Elo2026-09-16
Design Arena UI
1345 Elo2026-08-29
Design Arena UI
1345 Elo2026-08-30
Design Arena UI
1349 Elo2026-09-07
Design Arena UI
1348 Elo2026-08-31
Design Arena UI
1350 Elo2026-09-01
Design Arena UI
1351 Elo2026-09-02
Design Arena UI
1351 Elo2026-09-03
Design Arena UI
1338 Elo2026-09-08
Design Arena UI
1327 Elo2026-09-17
Design Arena UI
1349 Elo2026-09-04
Design Arena UI
1333 Elo2026-09-09
Design Arena UI
1327 Elo2026-09-18
Design Arena UI
1333 Elo2026-09-10
Design Arena UI
1334 Elo2026-09-11
Design Arena UI
1333 Elo2026-09-12
Design Arena UI
1330 Elo2026-09-19
Design Arena UI
1325 Elo2026-09-13
Design Arena UI
1328 Elo2026-09-14
Design Arena UI
1327 Elo2026-09-15
Design Arena UI
1330 Elo2026-09-20
Design Arena Web-app Agent
1261 Elo2026-08-14
Design Arena Web-app Agent
1262 Elo2026-08-18
Design Arena Web-app Agent
1279 Elo2026-08-11
Design Arena Web-app Agent
1261 Elo2026-08-15
Design Arena Web-app Agent
1264 Elo2026-08-12
Design Arena Web-app Agent
1260 Elo2026-08-13
Design Arena Web-app Agent
1262 Elo2026-08-19
Design Arena Web-app Agent
1257 Elo2026-08-27
Design Arena Web-app Agent
1262 Elo2026-08-20
Design Arena Web-app Agent
1264 Elo2026-08-16
Design Arena Web-app Agent
1256 Elo2026-09-05
Design Arena Web-app Agent
1265 Elo2026-08-17
Design Arena Web-app Agent
1261 Elo2026-08-21
Design Arena Web-app Agent
1262 Elo2026-08-22
Design Arena Web-app Agent
1264 Elo2026-08-23
Design Arena Web-app Agent
1259 Elo2026-08-28
Design Arena Web-app Agent
1258 Elo2026-08-24
Design Arena Web-app Agent
1258 Elo2026-08-25
Design Arena Web-app Agent
1256 Elo2026-08-26
Design Arena Web-app Agent
1241 Elo2026-09-16
Design Arena Web-app Agent
1256 Elo2026-09-06
Design Arena Web-app Agent
1259 Elo2026-08-29
Design Arena Web-app Agent
1256 Elo2026-08-30
Design Arena Web-app Agent
1252 Elo2026-09-07
Design Arena Web-app Agent
1257 Elo2026-08-31
Design Arena Web-app Agent
1256 Elo2026-09-01
Design Arena Web-app Agent
1256 Elo2026-09-02
Design Arena Web-app Agent
1256 Elo2026-09-03
Design Arena Web-app Agent
1253 Elo2026-09-08
Design Arena Web-app Agent
1240 Elo2026-09-17
Design Arena Web-app Agent
1256 Elo2026-09-04
Design Arena Web-app Agent
1247 Elo2026-09-09
Design Arena Web-app Agent
1240 Elo2026-09-18
Design Arena Web-app Agent
1247 Elo2026-09-10
Design Arena Web-app Agent
1246 Elo2026-09-11
Design Arena Web-app Agent
1244 Elo2026-09-12
Design Arena Web-app Agent
1240 Elo2026-09-19
Design Arena Web-app Agent
1243 Elo2026-09-13
Design Arena Web-app Agent
1243 Elo2026-09-14
Design Arena Web-app Agent
1239 Elo2026-09-15
Design Arena Web-app Agent
1240 Elo2026-09-20
Design Arena Website
1332 Elo2026-08-09
Design Arena Website
1338 Elo2026-08-14
Design Arena Website
1340 Elo2026-08-10
Design Arena Website
1333 Elo2026-08-08
Design Arena Website
1329 Elo2026-08-18
Design Arena Website
1339 Elo2026-08-11
Design Arena Website
1329 Elo2026-08-15
Design Arena Website
1336 Elo2026-08-12
Design Arena Website
1336 Elo2026-08-13
Design Arena Website
1329 Elo2026-08-19
Design Arena Website
1328 Elo2026-08-16
Design Arena Website
1329 Elo2026-08-20
Design Arena Website
1332 Elo2026-08-27
Design Arena Website
1329 Elo2026-08-17
Design Arena Website
1326 Elo2026-09-05
Design Arena Website
1335 Elo2026-08-21
Design Arena Website
1336 Elo2026-08-22
Design Arena Website
1335 Elo2026-08-23
Design Arena Website
1335 Elo2026-08-24
Design Arena Website
1332 Elo2026-08-28
Design Arena Website
1335 Elo2026-08-25
Design Arena Website
1334 Elo2026-08-26
Design Arena Website
1324 Elo2026-09-06
Design Arena Website
1322 Elo2026-09-16
Design Arena Website
1332 Elo2026-08-29
Design Arena Website
1333 Elo2026-08-30
Design Arena Website
1333 Elo2026-08-31
Design Arena Website
1324 Elo2026-09-07
Design Arena Website
1333 Elo2026-09-01
Design Arena Website
1332 Elo2026-09-02
Design Arena Website
1329 Elo2026-09-03
Design Arena Website
1325 Elo2026-09-08
Design Arena Website
1322 Elo2026-09-17
Design Arena Website
1327 Elo2026-09-04
Design Arena Website
1321 Elo2026-09-09
Design Arena Website
1321 Elo2026-09-18
Design Arena Website
1322 Elo2026-09-10
Design Arena Website
1322 Elo2026-09-11
Design Arena Website
1321 Elo2026-09-12
Design Arena Website
1321 Elo2026-09-19
Design Arena Website
1323 Elo2026-09-13
Design Arena Website
1321 Elo2026-09-14
Design Arena Website
1321 Elo2026-09-15
Design Arena Website
1321 Elo2026-09-20
LiveBench Coding
77.5%2026-06-25
LiveBench Language
78.6%2026-06-25
LiveBench Math
91.2%2026-06-25
LiveBench Reasoning
90%2026-06-25
LMArena Agent
1.62026-08-24
LMArena Agent
12026-08-31
LMArena Agent
0.52026-09-05
LMArena Agent
1.32026-08-27
LMArena Agent
-1.82026-09-15
LMArena Agent
-1.82026-09-10
LMArena Agent
-1.62026-09-14
LMArena Creative Writing
1453 Elo2026-08-06
LMArena Creative Writing
1449 Elo2026-08-12
LMArena Creative Writing
1446 Elo2026-08-21
LMArena Creative Writing
1445 Elo2026-08-27
LMArena Creative Writing
1444 Elo2026-09-01
LMArena Creative Writing
1446 Elo2026-09-02
LMArena Creative Writing
1448 Elo2026-09-11
LMArena Creative Writing
1448 Elo2026-09-13
LMArena Long Query
1478 Elo2026-08-06
LMArena Long Query
1485 Elo2026-08-12
LMArena Long Query
1484 Elo2026-08-21
LMArena Long Query
1485 Elo2026-08-27
LMArena Long Query
1486 Elo2026-09-01
LMArena Long Query
1486 Elo2026-09-02
LMArena Long Query
1487 Elo2026-09-11
LMArena Long Query
1487 Elo2026-09-13
LMArena Text
1498 Elo2026-08-06
LMArena Text
1499 Elo2026-08-12
LMArena Text
1499 Elo2026-08-10
LMArena Text
1498 Elo2026-08-21
LMArena Text
1499 Elo2026-09-01
LMArena Text
1499 Elo2026-09-02
LMArena Text
1498 Elo2026-08-27
LMArena Text
1500 Elo2026-09-13
LMArena Text
1499 Elo2026-09-11
LMArena Vision
1290 Elo2026-08-06
LMArena Vision
1292 Elo2026-08-21
LMArena Vision
1292 Elo2026-09-13
LMArena Vision
1292 Elo2026-08-27
LMArena WebDev
1544 Elo2026-08-06
LMArena WebDev
1535 Elo2026-08-12
LMArena WebDev
1535 Elo2026-08-10
LMArena WebDev
1535 Elo2026-08-14
LMArena WebDev
1534 Elo2026-09-01
LMArena WebDev
1534 Elo2026-09-05
LMArena WebDev
1534 Elo2026-08-21
LMArena WebDev
1534 Elo2026-08-30
LMArena WebDev
1534 Elo2026-09-11

LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open. Design Arena uses blind human preference.

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. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Marketing CopyEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Chat & RoleplayEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Creative WritingEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Frontend & UIEstablished evidence

    100% of intended weighted task evidence across 3 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for WritingEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • 100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • 100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • 85% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Code CompletionEstablished evidence

    81% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.

  • Best LLM for Competition MathEstablished evidence

    75% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Math & ReasoningEstablished evidence

    75% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • 67% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.

  • 65% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.

  • Best LLM for Fast SummariesEstablished evidence

    64% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.

  • Best Value LLMEstablished evidence

    64% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.

  • Best LLM for CodingProvisional evidence

    58% of intended weighted task evidence across 3 independent sources; broader independent confirmation is still missing from Aider Polyglot or SWE-bench Verified. 8 of 8 configured evaluation feeds currently have results.

  • 55% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from WMT translation. 4 of 5 configured evaluation feeds currently have results.

  • 55% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from WMT translation. 4 of 5 configured evaluation feeds currently have results.

  • Best LLM for TranslationProvisional evidence

    55% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from WMT translation. 4 of 5 configured evaluation feeds currently have results.

  • Best Cheap LLM for High VolumeProvisional evidence

    50% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Route reliability. 3 of 4 configured evaluation feeds currently have results.

  • Cheapest Capable LLMProvisional evidence

    50% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Route reliability. 3 of 4 configured evaluation feeds currently have results.

  • Best Local LLM for CodingProvisional evidence

    50% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Aider Polyglot or SWE-rebench. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Agentic CodingProvisional evidence

    46% of intended weighted task evidence across 3 independent sources; broader independent confirmation is still missing from Frontier-Bench or SWE-rebench. 8 of 8 configured evaluation feeds currently have results.

  • 40% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Aider Polyglot or SWE-bench Verified. 6 of 6 configured evaluation feeds currently have results.

  • 40% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from FACTS Grounding or LMArena Document. 4 of 6 configured evaluation feeds currently have results.

  • Best LLM for SummarizationProvisional evidence

    40% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from FACTS Grounding or LMArena Document. 4 of 6 configured evaluation feeds currently have results.

  • 39% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or Structured-output eval. 4 of 5 configured evaluation feeds currently have results.

  • 39% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or Structured-output eval. 4 of 5 configured evaluation feeds currently have results.

  • Best LLM for Hermes AgentProvisional evidence

    33% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for OpenHandsProvisional evidence

    33% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for GooseProvisional evidence

    33% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for OpenClawProvisional evidence

    33% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 5 of 5 configured evaluation feeds currently have results.

  • 31% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Route reliability or Structured-output eval. 2 of 4 configured evaluation feeds currently have results.

  • Best LLM for AI AgentsProvisional evidence

    27% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or OSWorld Verified. 7 of 7 configured evaluation feeds currently have results.

  • 25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Search. 4 of 5 configured evaluation feeds currently have results.

  • Best LLM for Autonomous AgentsProvisional evidence

    25% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Frontier-Bench or OSWorld Verified. 7 of 7 configured evaluation feeds currently have results.

  • Best LLM for Massive ContextProvisional evidence

    25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LMArena Document or LongBench v2. 3 of 4 configured evaluation feeds currently have results.

  • 25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or OSWorld Verified. 4 of 4 configured evaluation feeds currently have results.

  • Best LLM for OCR & DocumentsProvisional evidence

    25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LMArena Document or Structured-output eval. 3 of 5 configured evaluation feeds currently have results.

  • 25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LMArena Document or Structured-output eval. 3 of 5 configured evaluation feeds currently have results.

  • Best LLM for Charts & DiagramsProvisional evidence

    25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LMArena Document or Structured-output eval. 3 of 5 configured evaluation feeds currently have results.

  • Best LLM for Document ParsingProvisional evidence

    25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LMArena Document or Structured-output eval. 3 of 5 configured evaluation feeds currently have results.

  • 18% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from FACTS Grounding or LMArena Document. 4 of 6 configured evaluation feeds currently have results.

  • Best LLM for Grounded RAGProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from CRAG or FACTS Grounding. 2 of 5 configured evaluation feeds currently have results.

Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.