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GPT-5.1 Codex vs Seed-1.8
Comprehensive side-by-side LLM comparison
Seed-1.8 supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-5.1 Codex, released by OpenAI in November 2025, is a coding-specialized model from the GPT-5.1 family engineered for software engineering tasks including code generation, multi-file editing, and agentic development. It targets developers and automated coding pipelines requiring a GPT-5.1-generation model tuned for programming.
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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.
1 month newer
GPT-5.1 Codex
OpenAI
2025-11
Seed-1.8
ByteDance
2025-12-18
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5.1 Codex
0 providers
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Seed-1.8
0 providers
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GPT-5.1 Codex
Avg Score:0.0%
Providers:0
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Seed-1.8
Avg Score:0.0%
Providers:0