Output tokens cost $0.27 per million on Doubao Seed 1.8 and $3.94 per million on GLM 5.2. Input tokens cost $0.11 per million on Doubao Seed 1.8 and $1.13 per million on GLM 5.2. Cached input tokens are billed at $0.02 per million on Doubao Seed 1.8 and $0.28 per million on GLM 5.2. Context lengths are 256,000 tokens on Doubao Seed 1.8 and 1,000,000 tokens on GLM 5.2. Time to first token (TTFT) measured on AIHubMix is 1.7s on Doubao Seed 1.8 and 0.6s on GLM 5.2. Measured output throughput is 26.6 tok/s on Doubao Seed 1.8 and 46.0 tok/s on GLM 5.2.
Doubao Seed 1.8
GLM 5.2Doubao's strongest multimodal Agent model Seed1.8 has powerful multimodal capabilities, supports image and text input, and can efficiently and accurately complete tasks in scenarios such as information retrieval, code generation, GUI interaction, and complex workflows, meeting increasingly diverse technical demands.
GLM-5.2 is Z.ai’s flagship model for the era of long-horizon tasks. With a truly usable 1M-token context window, it can handle project-level engineering context, execute long-running tasks more reliably, follow engineering standards more consistently, and complete the full development workflow from requirements to multi-platform deployment in a single task.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
Doubao Seed 1.8: $0.27/M output tokens; GLM 5.2: $3.94/M. Use the cost calculator above to estimate your own workload.
GLM 5.2: 0.6s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Doubao Seed 1.8 accepts 256,000 and GLM 5.2 accepts 1,000,000 input tokens. Maximum output per request is 64,000 tokens on Doubao Seed 1.8 and 128,000 tokens on GLM 5.2.
GLM 5.2 at 46.0 tok/s and Doubao Seed 1.8 at 26.6 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Doubao Seed 1.8 accepts text, image and video input and supports thinking, web search, tool calling, function calling and structured outputs; GLM 5.2 accepts text input and supports thinking, tool calling, function calling and structured outputs.
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
Related model match-ups readers also look at.
AIHubMix