Doubao Seed 2.1's pricing strategy is quite aggressive, directly targeting GPT-5.5 and even cheaper. The performance surpassing nl2repo in benchmarks is pretty interesting, but is the weekly upgrade cycle for Volcano Engine too aggressive? Would they dare to deploy it in production?

CoinWorld reports that ByteDance has opened the Doubao Seed 2.1 large-model API. The Pro and Turbo versions enhance deeper thinking, focusing on complex programming delivery, long-chain agent execution, and multimodal vision. The flagship version, doubao-seed-2.1-pro, performs close to or exceeds GPT-5.5 in code and development evaluations, achieving 59.8% and 47.0% respectively in the sc scientific computing and nl2repo-bench code generation tests, higher than GPT-5.5’s 58.4% and 45.1%. In software engineering evaluations, it scores 57.5%, leading Gemini-3.1-Pro. API pricing: Pro is 6 yuan per million tokens for input and 30 yuan per million tokens for output, while Turbo is priced at half. Volcano Engine has launched seed-evolving weekly rolling upgrades, allowing developers to access the latest model capabilities every week.