GLM 5.3 vs Grok 4.6: price, context window and capabilities
GLM 5.3 (z-ai/glm-5.3) is a language model from Z.ai and Grok 4.6 (x-ai/grok-4.6) a multimodal language model from SpaceXAI; both are on the OceanToken API. GLM 5.3 costs less per token than Grok 4.6: $1.19 against $2.00 per 1M input tokens (41% less) and $3.74 against $6.00 per 1M output tokens (38% less). GLM 5.3 has the larger context window: 1.05M tokens (1,048,576) against 500K (500,000) for Grok 4.6. Both support tool calling, reasoning and structured outputs; only Grok 4.6 also lists image input and file input.
Side by side
| Spec | GLM 5.3 −25% | Grok 4.6 |
|---|---|---|
| Model | GLM 5.3z- | Grok 4.6x- |
| Publisher | Z.ai | SpaceXAI |
| Kind | Text | Text & vision |
| Context window | 1.05M tokens1,048,576 | 500K tokens500,000 |
| Input price | $1.19 / 1M tokens | $2.00 / 1M tokens |
| Output price | $3.74 / 1M tokens | $6.00 / 1M tokens |
| Cached input price | $0.26 / 1M tokens | $0.50 / 1M tokens |
| Web search price | – | $0.005 / search |
| Discount (vs official, top tier) | −25% | — |
| Inputs | text | text, images and files |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose GLM 5.3 to spend less per token: 41% less for input and 38% less for output than Grok 4.6.
- Choose GLM 5.3 for the longest inputs: its context window holds 1.05M tokens against 500K for Grok 4.6.
- Choose Grok 4.6 if you need image input and file input: GLM 5.3 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.
Frequently asked questions
Which is cheaper, GLM 5.3 or Grok 4.6?
GLM 5.3. GLM 5.3 costs less per token than Grok 4.6: $1.19 against $2.00 per 1M input tokens (41% less) and $3.74 against $6.00 per 1M output tokens (38% 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 Grok 4.6?
GLM 5.3. GLM 5.3 has the larger context window: 1.05M tokens (1,048,576) against 500K (500,000) for Grok 4.6.
Can I call both GLM 5.3 and Grok 4.6 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 x-ai/grok-4.6.
Models and publishers
GLM 5.3 · Grok 4.6 · All Z.ai models · All SpaceXAI models
More comparisons
GLM 5.3 vs DeepSeek V4 Pro · GLM 5.3 vs Kimi K3 · Grok 4.6 vs GPT-6 Sol · Grok 4.6 vs Claude Sonnet 5.5 · All comparisons