← Explore Seminal AI · AI reference · Snapshot captured September 7, 2026 · Understand model costs
Seminal AI
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Spark Pro-128K

The only Spark tier with a long window; choose it for document work, but confirm the rate with iFlytek sales since no public price exists.

Data checked 2026-09-06

Chinese AI labs ga pro-128k

Context window
131.1K tokens in
Max output
131.1K tokens out
Input
— per 1M tokens
Output
— per 1M tokens

A What it is for

B Capabilities

long context WebSocket API
Input modalitiestext
Output modalitiestext

C Others from Chinese AI labs

Model Context Max out In $/M Out $/M Blended Status
Kimi K3 kimi-k3 1M — $2.98 $14.90 $5.96 ga open
Kimi K2.7 Code kimi-k2.7-code 262.1K — $0.95 $4.00 $1.71 ga open
Kimi K2.7 Code Highspeed kimi-k2.7-code-highspeed 262.1K — $1.90 $8.00 $3.42 ga open
Kimi K2.6 kimi-k2.6 262.1K — $0.97 $4.02 $1.73 ga open
GLM-5.3 glm-5.3 1M 131.1K $1.40 $4.40 $2.15 ga open
GLM-5.3-Flash glm-5.3-flash 1M 131.1K $0.07 $0.25 $0.12 ga open
GLM-5.2 glm-5.2 1M 131.1K $1.40 $4.40 $2.15 ga open
GLM-5 glm-5 200K 131.1K $1.00 $3.20 $1.55 ga open
GLM-4.7 glm-4.7 200K 131.1K $0.60 $2.20 $1.00 ga open
GLM-4.7-FlashX glm-4.7-flashx 200K 131.1K $0.07 $0.40 $0.15 ga
GLM-4.7-Flash glm-4.7-flash 200K 131.1K $0.00 $0.00 $0.00 ga
GLM-4.6V glm-4.6v 128K — $0.30 $0.90 $0.45 ga

How this model is billed. Model exists and is served: official HTTP doc lists model value 'pro-128k' (websocket wss://spark-api.xf-yun.com/chat/pro-128k, domain=pro-128k), max input 128K / max output 4K, tokens metered separately per version. No per-token price is published: iFlytek's 计费说明 (https://www.xfyun.cn/doc/spark/BillingDescription.html) directs to https://training.xfyun.cn/account and the actual purchase page for

D Verify before you commit

Model pricing changes without notice and this page is a snapshot. Confirm against the vendor's own page before you build a budget on it.

Source: xfyun.cn · checked 2026-09-06 · Chinese AI labs pricing · API docs