Comprehensive side-by-side LLM comparison
. Both models have their strengths depending on your specific coding needs.
ByteDance
Doubao 1.5 Vision Pro, released by ByteDance via Volcano Engine on January 22, 2025, is a multimodal large language model from the Doubao 1.5 family with comprehensive upgrades to visual reasoning, OCR, and fine-grained image understanding. Built on a large-scale sparse MoE architecture, it targets vision-intensive workflows including document analysis, chart interpretation, and visual question answering.
OpenAI
GPT-5.1, released by OpenAI in November 2025, is a large language model from the GPT-5 family that delivers incremental improvements in reasoning, instruction following, and multimodal understanding over GPT-5. It features a 400K token context window and targets general-purpose development, long-context analysis, and agentic workflows.
9 months newer
Doubao 1.5 Vision Pro
ByteDance
2025-01-22

GPT-5.1
OpenAI
2025-11
Context window and performance specifications
Available providers and their performance metrics
Doubao 1.5 Vision Pro
ByteDance API
GPT-5.1
Doubao 1.5 Vision Pro
GPT-5.1
Doubao 1.5 Vision Pro
GPT-5.1