| Google (DeepMind) | Gemini 3.8 Flash (no tools) | 86.2% | Source for Gemini 3.8 Flash (no tools) on CharXiv Reasoning — No tools (opens in a new tab) | 30004 |
| Google (DeepMind) | Gemini 3.7 Flash | 84.5% | Source for Gemini 3.7 Flash on CharXiv Reasoning — No tools (opens in a new tab) | 30010 |
| Meta AI (originally Facebook AI Research) | Muse Glimmer 30B (high) | 78.8% | Source for Muse Glimmer 30B (high) on CharXiv Reasoning — No tools (opens in a new tab) | 80004 |
| Google (DeepMind) | Gemini 3.6 Flash | 85.2% | Source for Gemini 3.6 Flash on CharXiv Reasoning — No tools (opens in a new tab) | 30007 |
| Moonshot AI | Kimi K3 (max) | 84.8% | Source for Kimi K3 (max) on CharXiv Reasoning — No tools (opens in a new tab) | 120003 |
| Thinking Machines Lab | Inkling (effort=0.99) | 78.1% | Source for Inkling (effort=0.99) on CharXiv Reasoning — No tools (opens in a new tab) | 160001 |
| Meta AI (originally Facebook AI Research) | Muse Spark 1.1 (xhigh) | 88.4% | Source for Muse Spark 1.1 (xhigh) on CharXiv Reasoning — No tools (opens in a new tab) | 80002 |
| Anthropic | Claude Sonnet 5 (max) | 77.0% | Source for Claude Sonnet 5 (max) on CharXiv Reasoning — No tools (opens in a new tab) | 20013 |
| Google (DeepMind) | Gemini 3.5 Flash | 84.2% | Source for Gemini 3.5 Flash on CharXiv Reasoning — No tools (opens in a new tab) | 30006 |
| Moonshot AI | Kimi K2.6 (thinking) | 80.4% | Source for Kimi K2.6 (thinking) on CharXiv Reasoning — No tools (opens in a new tab) | 120002 |
| Alibaba (Tongyi) | Qwen3.6-35B-A3B | 78.0% | Source for Qwen3.6-35B-A3B on CharXiv Reasoning — No tools (opens in a new tab) | 130005 |
| Moonshot AI | Kimi K2.5 (thinking) | 77.5% | Source for Kimi K2.5 (thinking) on CharXiv Reasoning — No tools (opens in a new tab) | 120001 |
| OpenAI | GPT-5.2 (xhigh) | 82.1% | Source for GPT-5.2 (xhigh) on CharXiv Reasoning — No tools (opens in a new tab) | 10012 |