DeepSeek V4 Pro vs GLM 5.3 Prime: price, context window and capabilities
DeepSeek V4 Pro (deepseek/deepseek-v4-pro) from DeepSeek and GLM 5.3 Prime (z-ai/glm-5.3-prime) from Z.ai are both language models on the OceanToken API. DeepSeek V4 Pro costs less per token than GLM 5.3 Prime: $1.056 against $2.80 per 1M input tokens (62% less) and $3.168 against $8.80 per 1M output tokens (64% less). DeepSeek V4 Pro has the larger context window: 1.05M tokens (1,048,576) against 1M (1,000,000) for GLM 5.3 Prime. Both support tool calling and reasoning; only DeepSeek V4 Pro also lists structured outputs.
Side by side
| Spec | DeepSeek V4 Pro −40% | GLM 5.3 Prime |
|---|---|---|
| Model | DeepSeek V4 Prodeepseek/ | GLM 5.3 Primez- |
| Publisher | DeepSeek | Z.ai |
| Kind | Text | Text |
| Context window | 1.05M tokens1,048,576 | 1M tokens1,000,000 |
| Input price | $1.056 / 1M tokens | $2.80 / 1M tokens |
| Output price | $3.168 / 1M tokens | $8.80 / 1M tokens |
| Cached input price | $0.044 / 1M tokens | $0.56 / 1M tokens |
| Discount (vs official, top tier) | −40% | — |
| Inputs | text | text |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Not listed |
About these prices
Which should you choose?
- Choose DeepSeek V4 Pro to spend less per token: 62% less for input and 64% less for output than GLM 5.3 Prime.
- Choose DeepSeek V4 Pro for the longest inputs: its context window holds 1.05M tokens against 1M for GLM 5.3 Prime.
- Choose DeepSeek V4 Pro if you need structured outputs: GLM 5.3 Prime does not list it.
- 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 DeepSeek V4 Pro GLM 5.3 Prime
Frequently asked questions
Which is cheaper, DeepSeek V4 Pro or GLM 5.3 Prime?
DeepSeek V4 Pro. DeepSeek V4 Pro costs less per token than GLM 5.3 Prime: $1.056 against $2.80 per 1M input tokens (62% less) and $3.168 against $8.80 per 1M output tokens (64% less). These are OceanToken starting prices per use; the OceanToken console always shows the current price.
Which has the larger context window, DeepSeek V4 Pro or GLM 5.3 Prime?
DeepSeek V4 Pro. DeepSeek V4 Pro has the larger context window: 1.05M tokens (1,048,576) against 1M (1,000,000) for GLM 5.3 Prime.
Can I call both DeepSeek V4 Pro and GLM 5.3 Prime 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 deepseek/deepseek-v4-pro or z-ai/glm-5.3-prime.
Models and publishers
DeepSeek V4 Pro · GLM 5.3 Prime · All DeepSeek models · All Z.ai models
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