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GPT-5 vs Seed 1.5-VL
Comprehensive side-by-side LLM comparison
GPT-5 leads with 10.8% higher average benchmark score. Overall, GPT-5 is the stronger choice for coding tasks.
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OpenAI
GPT-5, released by OpenAI on August 7, 2025, is a large language model that combines direct generation and extended reasoning in a single unified system with a built-in routing mechanism. It features a 400K token context window, 128K maximum output tokens, native multimodal support (text, image, audio, video), and demonstrated strong results across coding, mathematics, visual understanding, and health benchmarks at release. GPT-5 targets complex multi-step tasks including advanced coding, mathematical problem solving, and long-context analysis.
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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
OpenAI
2025-08-07
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT-5
Average Score:78.4%(+10.8%)
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Seed 1.5-VL
Average Score:67.6%
Performance comparison across key benchmark categories
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GPT-5
Multimodal78.4%(+10.8%)
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Seed 1.5-VL
Multimodal67.6%
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Knowledge Cutoff
Training data recency comparison
GPT-5
2025-05
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5
1 providers
OpenAI
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Seed 1.5-VL
0 providers
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GPT-5
Avg Score:78.4%(+10.8%)
Providers:1
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Seed 1.5-VL
Avg Score:67.6%
Providers:0