Comprehensive side-by-side LLM comparison
GPT-5.2 leads with 3.5% higher average benchmark score. Both models have their strengths depending on your specific coding needs.
OpenAI
GPT-5.2, released by OpenAI on December 11, 2025, is a large language model from the GPT-5 family that improves on GPT-5 in general intelligence, long-context understanding, agentic tool-calling, and vision. It features a 400K token context window, 128K maximum output tokens, and a knowledge cutoff of August 2025. GPT-5.2 targets long-context coding tasks, extended document analysis, and complex agentic workflows requiring reliable instruction following.
ByteDance
Seed 2.0 Pro is ByteDance's flagship general-purpose model, released in February 2026 under the Doubao brand through the Volcengine API platform, developed by the company's Seed research team as a foundation for agentic applications requiring long-horizon reasoning and multimodal input comprehension. The model accepts text, images, and extended video — including hour-length recordings — targeting enterprise use cases in long-form document analysis, agentic coding (integrated with ByteDance's TRAE IDE), and multi-turn reasoning tasks. It anchors a three-tier product family alongside Seed 2.0 Lite and Mini, positioned as ByteDance's response to frontier model competition in the Chinese and global enterprise AI markets.
2 months newer

GPT-5.2
OpenAI
2025-12-11
Seed 2.0 Pro
ByteDance
2026-02-14
Context window and performance specifications
Average performance across 1 common benchmarks
GPT-5.2
Seed 2.0 Pro
Performance comparison across key benchmark categories
GPT-5.2
Seed 2.0 Pro
GPT-5.2
2025-08
Available providers and their performance metrics
GPT-5.2
Seed 2.0 Pro
ByteDance API
GPT-5.2
Seed 2.0 Pro
GPT-5.2
Seed 2.0 Pro