LMArena - August 2025: Top 10 Open Models by Provider (Text) - August 2025
FreeCommunity-driven rankings for open AI models
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About LMArena - August 2025: Top 10 Open Models by Provider (Text) - August 2025
LM Arena is a community-driven platform that evaluates and ranks open-source AI models using real-world prompts submitted by its users. It provides monthly updates on the top open models, tracking shifts in performance and highlighting new entrants. The August 2025 rankings feature Qwen-3-235b-a22b-instruct by Alibaba Group at #1, with notable debuts from Z.ai's GLM-4.5 and OpenAI's gpt-oss-120b. All ranked models are within the top 50 overall, demonstrating the rapid evolution of open models that rival proprietary systems.
Key Features
Community-driven evaluations with real-world prompts
Monthly ranking updates of top open models
Detailed breakdown of ranking shifts and new entrants (climbers, movers, dropouts)
Covers models from providers like Alibaba, DeepSeek, OpenAI, Z.ai, Moonshot AI, MiniMax, Google DeepMind, Mistral AI
Free access to test top models at lmarena.ai
Pros & Cons
Pros
- Uses real-world community prompts for evaluation, not synthetic benchmarks alone
- Regular monthly updates keep information current and actionable
- Covers a wide range of providers, including emerging Chinese labs
- Free to access and test models on lmarena.ai
Cons
- Only covers open-weight models (does not evaluate proprietary models)
- Rankings may shift frequently due to new model entrants
- Evaluation based on community prompts may not cover niche or specialized use cases
Best For
Comparing open-source AI model performance for development decisionsIdentifying top open models for research or application integrationTracking trends and competitive landscape in open-weight AI models
FAQ
How does LM Arena evaluate models?
Models are evaluated using real-world prompts submitted by the LM Arena community, providing a practical measure of performance.
How often are rankings updated?
Rankings are updated monthly, as shown by the August 2025 Open Model Arena rankings.
Which models are included in the rankings?
The rankings cover open-source models from various providers including Alibaba, DeepSeek, OpenAI, Z.ai, Moonshot AI, MiniMax, Google DeepMind, and Mistral AI.