Output tokens cost $4.65 per million on Doubao Seed 2.1 Pro and $3.94 per million on GLM 5.2. Input tokens cost $0.93 per million on Doubao Seed 2.1 Pro and $1.13 per million on GLM 5.2. Cached input tokens are billed at $0.19 per million on Doubao Seed 2.1 Pro and $0.28 per million on GLM 5.2. Context lengths are 256,000 tokens on Doubao Seed 2.1 Pro and 1,000,000 tokens on GLM 5.2. Time to first token (TTFT) measured on AIHubMix is 4.5s on Doubao Seed 2.1 Pro and 1.1s on GLM 5.2. Measured output throughput is 30.1 tok/s on Doubao Seed 2.1 Pro and 37.7 tok/s on GLM 5.2.
Doubao Seed 2.1 Pro
GLM 5.2A new generation of large models moving toward production-grade intelligence, comprehensively upgrading coding, agent, and multimodal capabilities with stronger autonomous planning, long-horizon execution, and dynamic recovery abilities to handle real, complex enterprise tasks.
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.
GLM 5.2: $3.94/M output tokens; Doubao Seed 2.1 Pro: $4.65/M. Use the cost calculator above to estimate your own workload.
GLM 5.2: 1.1s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Doubao Seed 2.1 Pro accepts 256,000 and GLM 5.2 accepts 1,000,000 input tokens. Maximum output per request is 256,000 tokens on Doubao Seed 2.1 Pro and 128,000 tokens on GLM 5.2.
GLM 5.2 at 37.7 tok/s and Doubao Seed 2.1 Pro at 30.1 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Doubao Seed 2.1 Pro 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.
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