Observed Signal · Jul 11, 2024 · Technical Release · Source: Trending Topics · Impact: 4/5 · Sentiment: Positive
Meta Launches AI Model Muse Spark 1.3, Second Behind Anthropic
Meta CEO Mark Zuckerberg announced the rollout of Muse Spark 1.3, the fourth release in five months. According to Artificial Analysis, the publicly available xhigh variant scores 61 points on the Intelligence Index, tying with GPT-5.6 Sol (max), Grok 4.6 (high) and Claude Opus 5 (high). The stronger max variant, in limited preview for Meta partners, scores 62, behind only Anthropic's Claude Fable 5.1 (max) at 66 and Claude Opus 5 (max) at 63. Muse Spark 1.3 (xhigh) is priced at $0.55 per task, making it the cheapest model among those scoring 59 or higher. Meta has confirmed open-weights release only for Muse Spark 1.2; a decision on 1.3 remains open. The next flagship, codenamed Watermelon, is expected in autumn and reportedly matches GPT-5.5 on central benchmarks, according to The Information.
Major technical release from Meta in frontier AI; Muse Spark 1.3 closes the gap to Anthropic, undercuts rivals on price, and its open-weight decision could reshape the open-source AI landscape, with implications for agentic AI tools used across ad tech and enterprise.
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Key Takeaways & Evidence Grounding
- Meta announced the rollout of Muse Spark 1.3, its fourth Muse Spark release in five months.
- Muse Spark 1.3 (xhigh) scores 61 points on the Artificial Analysis Intelligence Index, tying with GPT-5.6 Sol (max), Grok 4.6 (high) and Claude Opus 5 (high).
- The max variant scores 62 points, ranking behind only Anthropic's Claude Fable 5.1 (max) and Claude Opus 5 (max).
- Muse Spark 1.3 (xhigh) costs $0.55 per task on the Intelligence Index, the lowest price among models scoring 59 or more.
- Meta has only committed to open-weights release for Muse Spark 1.2; open weights for version 1.3 are not yet decided.
Connected Companies & Entities
9 Entities mapped“Mark Zuckerberg announced the rollout of Muse Spark 1.3 on X....”
“Only two models from Anthropic, Claude Fable 5.1 (max) and Claude Opus 5 (max), rank above Meta's new model in the overall index....”
“Google's best-ranked model in the index is Gemini 3.8 Flash (high) with 59 points....”
“OpenAI and xAI do not exceed Muse Spark 1.3's score in their strongest listed configurations....”
“Kimi K3 (max) from Moonshot AI and GLM-5.3 (max) from Z.ai each score 60 points in the open-weights ranking....”
“Kimi K3 (max) from Moonshot AI and GLM-5.3 (max) from Z.ai each score 60 points in the open-weights ranking....”
“Kimi K3 (max) from Moonshot AI and GLM-5.3 (max) from Z.ai each score 60 points in the open-weights ranking....”
“According to reports from The Information, the Watermelon model is expected to appear in autumn....”
“Alibaba's Qwen3.8 scores 58 points in the open-weights ranking....”
Ontology Mapping & Concepts
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