GLM 5.3 Prime vs Qwen3.8 Max: price, context window and capabilities
GLM 5.3 Prime (z-ai/glm-5.3-prime) is a language model from Z.ai and Qwen3.8 Max (qwen/qwen3.8-max-0902) a multimodal language model from Qwen; both are on the OceanToken API. Qwen3.8 Max costs less per token than GLM 5.3 Prime: $1.90 against $2.80 per 1M input tokens (32% less) and $5.70 against $8.80 per 1M output tokens (35% less). GLM 5.3 Prime has the larger context window: 1M tokens (1,000,000) against 984K (983,616) for Qwen3.8 Max. Both support tool calling and reasoning; only Qwen3.8 Max also lists structured outputs, image input and video input.
Side by side
| Spec | GLM 5.3 Prime | Qwen3.8 Max −25% |
|---|---|---|
| Model | GLM 5.3 Primez- | Qwen3.8 Maxqwen/ |
| Publisher | Z.ai | Qwen |
| Kind | Text | Text, vision & video |
| Context window | 1M tokens1,000,000 | 984K tokens983,616 |
| Input price | $2.80 / 1M tokens | $1.90 / 1M tokens |
| Output price | $8.80 / 1M tokens | $5.70 / 1M tokens |
| Cached input price | $0.56 / 1M tokens | $0.25 / 1M tokens |
| Cache write price | – | $2.50 / 1M tokens |
| Discount (vs official, top tier) | — | −25% |
| Inputs | text | text, images and video |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Not listed | Yes |
About these prices
Which should you choose?
- Choose Qwen3.8 Max to spend less per token: 32% less for input and 35% less for output than GLM 5.3 Prime.
- Choose GLM 5.3 Prime for the longest inputs: its context window holds 1M tokens against 984K for Qwen3.8 Max.
- Choose Qwen3.8 Max if you need structured outputs, image input and video input: GLM 5.3 Prime does not list them.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key GLM 5.3 Prime Qwen3.8 Max
Frequently asked questions
Which is cheaper, GLM 5.3 Prime or Qwen3.8 Max?
Qwen3.8 Max. Qwen3.8 Max costs less per token than GLM 5.3 Prime: $1.90 against $2.80 per 1M input tokens (32% less) and $5.70 against $8.80 per 1M output tokens (35% less). These are OceanToken starting prices per use; the OceanToken console always shows the current price.
Which has the larger context window, GLM 5.3 Prime or Qwen3.8 Max?
GLM 5.3 Prime. GLM 5.3 Prime has the larger context window: 1M tokens (1,000,000) against 984K (983,616) for Qwen3.8 Max.
Can I call both GLM 5.3 Prime and Qwen3.8 Max with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id z-ai/glm-5.3-prime or qwen/qwen3.8-max-0902.
Models and publishers
GLM 5.3 Prime · Qwen3.8 Max · All Z.ai models · All Qwen models
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