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GPT-5 Codex vs Seed 1.5-VL
Comprehensive side-by-side LLM comparison
Seed 1.5-VL supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-5 Codex, released by OpenAI in August 2025, is a coding-specialized large language model from the GPT-5 family engineered for software engineering, code generation, and agentic development workflows. It builds on GPT-5's architecture with optimizations targeting multi-file code editing, test generation, and automated debugging. GPT-5 Codex targets developers and agentic coding tools requiring a model tuned specifically for programming tasks.
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ByteDance
Seed1.5-VL, released by ByteDance Seed on May 15, 2025, is a vision-language foundation model composed of a 532M-parameter vision encoder and a Mixture-of-Experts language model with 20 billion active parameters. It was pretrained on over 3 trillion multimodal tokens and achieved state-of-the-art performance on 38 out of 60 public VLM benchmarks at release. Seed1.5-VL targets complex visual reasoning, OCR, video comprehension, 3D spatial understanding, and multimodal agentic tasks.
2 months newer
Seed 1.5-VL
ByteDance
2025-05-15
GPT-5 Codex
OpenAI
2025-08
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5 Codex
0 providers
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Seed 1.5-VL
0 providers
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GPT-5 Codex
Avg Score:0.0%
Providers:0
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Seed 1.5-VL
Avg Score:0.0%
Providers:0