GLM 5.3 vs DeepSeek V4 Pro: price, context window and capabilities
GLM 5.3 (z-ai/glm-5.3) from Z.ai and DeepSeek V4 Pro (deepseek/deepseek-v4-pro) from DeepSeek are both language models on the OceanToken API. DeepSeek V4 Pro costs less per token than GLM 5.3: $1.056 against $1.19 per 1M input tokens (11% less) and $3.168 against $3.74 per 1M output tokens (15% less). Both have a 1.05M-token context window (1,048,576 tokens). Both support tool calling, reasoning and structured outputs.
Side by side
| Spec | GLM 5.3 −25% | DeepSeek V4 Pro −40% |
|---|---|---|
| Model | GLM 5.3z- | DeepSeek V4 Prodeepseek/ |
| Publisher | Z.ai | DeepSeek |
| Kind | Text | Text |
| Context window | 1.05M tokens1,048,576 | 1.05M tokens1,048,576 |
| Input price | $1.19 / 1M tokens | $1.056 / 1M tokens |
| Output price | $3.74 / 1M tokens | $3.168 / 1M tokens |
| Cached input price | $0.26 / 1M tokens | $0.044 / 1M tokens |
| Discount (vs official, top tier) | −25% | −40% |
| Inputs | text | text |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose DeepSeek V4 Pro to spend less per token: 11% less for input and 15% less for output than GLM 5.3.
- Context size does not separate them: both hold about 1.05M tokens.
- Both list the same capabilities: tool calling, reasoning and structured outputs.
- 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 DeepSeek V4 Pro
Frequently asked questions
Which is cheaper, GLM 5.3 or DeepSeek V4 Pro?
DeepSeek V4 Pro. DeepSeek V4 Pro costs less per token than GLM 5.3: $1.056 against $1.19 per 1M input tokens (11% less) and $3.168 against $3.74 per 1M output tokens (15% 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 or DeepSeek V4 Pro?
Neither. Both have a 1.05M-token context window (1,048,576 tokens).
Can I call both GLM 5.3 and DeepSeek V4 Pro 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 or deepseek/deepseek-v4-pro.
Models and publishers
GLM 5.3 · DeepSeek V4 Pro · All Z.ai models · All DeepSeek models
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