Muse Spark 1.3

Meta
Muse Spark 1.3 launch post cover

Cost/1M tokens

input
$1.25
cached
$0.15
output
$4.25
Context
1Mtokens
Released
2mo ago

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Arena leaderboards and other sourced evaluations appear below; missing scores are not zero.

How it ranks

Against its predecessor, similarly priced models and the models ranked around it.

DeepSWE 1.1

Best pass@1 per model · Higher is better

Not evaluated in DeepSWE 1.1

Arena Text

Best Arena rating per model · Higher is better

Arena #11

  1. 1501
    Claude Opus 4.7Nearby rank
  2. 1497
    Gemini 3.8 FlashNearby rank
  3. 1496
    Muse Spark 1.3
  4. 1493
    Muse Spark 1.2Predecessor
  5. 1491
    Muse Spark 1.1Nearby rank
  6. 1447
    GPT-5.4 MiniSimilar price
  7. 1443
    InklingSimilar price
  8. 1434
    GLM 5V TurboSimilar price
  9. 1414
    Claude Haiku 4.5Similar price

Level with Muse Spark 1.2 (predecessor, overlapping 95% CIs) · Ahead of 4 of 4 similarly priced models

Arena WebDev

Best Arena rating per model · Higher is better

Arena #20

  1. 1679
    GPT-6.1 TerraSimilar price
  2. 1664
  3. 1658
    Kimi K3Nearby rank
  4. 1655
    Muse Spark 1.3
  5. 1649
    Muse WonderNearby rank
  6. 1646
    Inkling 2 SmallNearby rank
  7. 1534
    Muse Spark 1.2Predecessor
  8. 1515
    Qwen3.7 MaxSimilar price
  9. 1399
    GLM 5V TurboSimilar price
  10. 1330
    Claude Haiku 4.5Similar price

+122 vs Muse Spark 1.2 (predecessor) · Ahead of 3 of 4 similarly priced models

Arena Vision

Best Arena rating per model · Higher is better

Arena #13

  1. 1294
    Muse Spark 1.2Predecessor
  2. 1293
    Gemini 3.8 FlashSimilar price
  3. 1293
    GPT-6.1 SolNearby rank
  4. 1291
    Muse Spark 1.3
  5. 1289
  6. 1289
    Claude Fable 5.1Nearby rank
  7. 1250
    GPT-5.4 MiniSimilar price
  8. 1242
    Grok 4.3Similar price
  9. 1232
    GLM 5V TurboSimilar price

Level with Muse Spark 1.2 (predecessor, overlapping 95% CIs) · Ahead of 3 of 4 similarly priced models

Arena Search

Best Arena rating per model · Higher is better

Not ranked on Arena Search yet

Arena Document

Best Arena rating per model · Higher is better

Arena #16

  1. 1480
    Muse Spark 1.1Earlier version
  2. 1478
  3. 1474
    GPT-5.6 TerraNearby rank
  4. 1474
    Muse Spark 1.3
  5. 1474
    GPT-6 AstraNearby rank
  6. 1471
    GPT-5.4Nearby rank
  7. 1469
    Gemini 3.8 FlashSimilar price
  8. 1450
    Kimi K2.6Similar price
  9. 1419
    Claude Haiku 4.5Similar price
  10. 1406
    GLM 5V TurboSimilar price

Level with Muse Spark 1.1 (earlier version, overlapping 95% CIs) · Ahead of 3 of 4 similarly priced models

Agent Arena

Best IPS score per model · Higher is better

Arena #21

  1. +0.120
    GPT-6.1 TerraSimilar price
  2. +0.024
    MiMo-V2.6-ProNearby rank
  3. +0.023
    Gemini 3.8 FlashNearby rank
  4. +0.022
    Muse Spark 1.3
  5. +0.020
  6. +0.020
    Claude Sonnet 5Nearby rank
  7. +0.002
    GLM 5.2Similar price
  8. -0.072
    Qwen3.7 MaxSimilar price
  9. -0.082
    Muse Spark 1.2Predecessor
  10. -0.173
    InklingSimilar price

+0.104 vs Muse Spark 1.2 (predecessor) · Ahead of 3 of 4 similarly priced models

FrontierMath-Tier-4-v2-Private

Best score per model · Higher is better

#23 of 72

  1. 92.7%
    GPT-6.1 TerraSimilar price
  2. 46.3%
    Claude Haiku 5.5Nearby rank
  3. 46.3%
  4. 46.3%
    Muse Spark 1.3
  5. 46.0%
    GPT-5.2 ProNearby rank
  6. 39.0%
    Kimi K3Nearby rank
  7. 34.1%
    Qwen3.7 MaxSimilar price
  8. 29.3%
    GLM 5.2Similar price
  9. 4.9%
    InklingSimilar price

Ahead of 3 of 4 similarly priced models

FrontierMath-Tiers-1-3-v2-Private

Best score per model · Higher is better

#24 of 87

  1. 90.9%
    GPT-6.1 TerraSimilar price
  2. 75.1%
    Claude Haiku 5.5Nearby rank
  3. 74.7%
    Qwen3.8 MaxNearby rank
  4. 74.4%
    Muse Spark 1.3
  5. 74.0%
    GPT-5.2 ProNearby rank
  6. 72.2%
    Kimi K3Nearby rank
  7. 64.6%
    Qwen3.7 MaxSimilar price
  8. 36.8%
    GLM 5.1Similar price
  9. 33.3%
    InklingSimilar price

Ahead of 3 of 4 similarly priced models

OTIS Mock AIME 2024-2025

Best score per model · Higher is better

#17 of 158

  1. 100.0%
    GPT-6.1 TerraSimilar price
  2. 99.4%
    Qwen3.8 MaxNearby rank
  3. 99.4%
  4. 99.2%
    Muse Spark 1.3
  5. 99.2%
    Grok 4.6Nearby rank
  6. 98.9%
    Claude Haiku 5.5Nearby rank
  7. 95.6%
    Qwen3.7 MaxSimilar price
  8. 93.3%
    GLM 5.1Similar price
  9. 66.7%
    Claude Haiku 4.5Similar price

Ahead of 3 of 4 similarly priced models

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

Reasoning effort

Arena WebDev

Score by reasoning effort · Higher is better

Arena Vision

Score by reasoning effort · Higher is better

FrontierMath-Tier-4-v2-Private

Score by reasoning effort · Higher is better

FrontierMath-Tiers-1-3-v2-Private

Score by reasoning effort · Higher is better

All published scores

Benchmark compilation: Epoch AI, Capabilities & benchmarking (CC BY attribution). Scores are converted to percentages and model names matched to the Vertical Tabs catalog. Individual evaluations are credited to their original sources. External results may carry separate licences and evaluation configurations; do not interpret scores from different harnesses as directly comparable.

Arena ratings: Arena (lmarena-ai/leaderboard-dataset), licensed CC BY 4.0. Ratings come from pairwise human votes and are only comparable within one leaderboard; the interval is Arena's 95% confidence interval. Model names are matched to the Vertical Tabs catalog.

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