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o3 vs Seed-1.8
Comprehensive side-by-side LLM comparison
Seed-1.8 leads with 38.9% higher average benchmark score. Overall, Seed-1.8 is the stronger choice for coding tasks.
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OpenAI
OpenAI o3, released by OpenAI in April 2025, is a large reasoning model that applies extended chain-of-thought processing to deliver improved performance on complex math, science, and coding tasks. It features a 200K token context window and native image understanding, with demonstrated strong results on mathematics and software engineering benchmarks. o3 targets demanding analytical and engineering tasks where deliberate, multi-step reasoning produces significantly better outcomes than direct generation.
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ByteDance
Seed-1.8, developed by ByteDance Seed, is a generalized agentic large language model supporting text and image input, with industry-leading GUI agent capabilities and improvements in multimodal reasoning over its predecessor Seed1.5-VL. It targets information retrieval, code generation, GUI interaction, and complex agentic workflows requiring robust multimodal understanding.
8 months newer
o3
OpenAI
2025-04-16
Seed-1.8
ByteDance
2025-12-18
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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o3
Average Score:23.0%
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Seed-1.8
Average Score:61.9%(+38.9%)
Performance comparison across key benchmark categories
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o3
Agents23.0%
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Seed-1.8
Agents61.9%(+38.9%)
Provider Availability & Performance
Available providers and their performance metrics
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o3
1 providers
OpenAI
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Seed-1.8
0 providers
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o3
Avg Score:23.0%
Providers:1
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Seed-1.8
Avg Score:61.9%(+38.9%)
Providers:0