Together AI has benchmarked its GLM-5.3 model against both OpenAI's GPT-5.6 Sol and Anthropic's Claude Fable 5 on the DeepSWE software engineering tasks. GLM-5.3 demonstrates competitive performance, narrowly trailing GPT-5.6 Sol in single-shot accuracy but surpassing it with multiple attempts and at a significantly lower cost. Against Claude Fable 5, GLM-5.3 matches accuracy while being over five times cheaper, with both models exhibiting similar failure modes and high task agreement. AI
IMPACT GLM-5.3's performance suggests open-weight models are closing the gap with frontier models in specialized tasks like software engineering, offering significant cost advantages.
RANK_REASON Comparison benchmark of multiple LLMs on a specific task.
AI-generated summary · Google Gemini · from 2 sources. How we write summaries →
