LLMJul 11, 2026, 8:28 AM

Meta's Muse Spark 1.1 outperforms GLM-5.2 in coding and costs slightly less

30-second summary

Meta’s Muse Spark 1.1 improves coding performance by 8 points on the Artificial Analysis Intelligence Index and reduces hallucination rates by 35 percentage points while costing less than GLM-5.2.

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Meta's Muse Spark 1.1 outperforms GLM-5.2 in coding and costs slightly less
Key takeaways
  • Muse Spark 1.1 scores 51 on the Artificial Analysis Intelligence Index, an 8-point improvement in three months.
  • In coding benchmarks, it outperforms GLM-5.2 with a score of 71.3 while costing $0.26 per task.
  • Hallucination rate drops from 73% to 38%, a 35 percentage point reduction.
  • The update positions Meta’s model as a more cost-effective and reliable alternative for developers.
Full story

Meta has released Muse Spark 1.1, an updated version of its AI model that shows marked improvements in coding performance and cost efficiency. On the Artificial Analysis Intelligence Index, the model scored 51, an eight-point increase over its previous iteration in just three months. In coding-specific benchmarks, Muse Spark 1.1 achieved a score of 71.3, surpassing GLM-5.2, a rival model from Zhipu AI.

Beyond performance gains, the update also addresses a critical issue in AI reliability. The hallucination rate for Muse Spark 1.1 dropped dramatically from 73% to 38%, a 35 percentage point reduction that could significantly improve trust in automated coding assistance. Additionally, the model’s cost per task is slightly lower at $0.26, making it a more economical choice for developers and businesses.

The improvements come at a time when AI models are increasingly being evaluated not just on raw performance but also on cost and reliability. Muse Spark 1.1’s advancements suggest Meta is making strides in balancing these factors, which could influence adoption rates in competitive markets like software development and enterprise automation.

Why this matters
Developers

Lower cost and reduced hallucinations make Muse Spark 1.1 a practical choice for coding tasks.

Businesses

Improved reliability and cost efficiency could drive adoption in enterprise automation and software development.

Everyone

AI models are being judged on both performance and trustworthiness, and this update reflects that shift.

Glossary
Artificial Analysis Intelligence Index
A benchmarking system that evaluates AI models across multiple dimensions, including coding performance and cost efficiency.
Hallucination rate
The percentage of incorrect or fabricated outputs generated by an AI model, a key metric for reliability.
Sources · 1
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