# GLM 5.3 Flashx API Pricing

As of October 21, 2026, GLM 5.3 Flashx costs $0.37 per 1M input tokens and $1.25 per 1M output tokens on Tencent TokenHub, with cache reads at $0.075 and cache writes at $0 per 1M tokens. It has a 1,000,000-token context window and returns up to 128,000 tokens per response.

- Page: https://models.litellm.ai/models/glm-5.3-flashx
- Lab: Z.ai
- LiteLLM model name: `tencent/glm-5.3-flashx`
- Context window: 1,000,000 tokens
- Max output: 128,000 tokens
- Added to LiteLLM: September 19, 2026
- Prices updated: October 13, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| Tencent TokenHub | `tencent/glm-5.3-flashx` | $0.37 | $1.25 | $0.075 | – | – | 1M |

## Cost examples

1,000 requests with 2,000 input and 500 output tokens each:

- Tencent TokenHub: $1.365

100 long-document requests with 100,000 input and 2,000 output tokens each:

- Tencent TokenHub: $3.95

## Features

Supported: Function calling, Structured output, Image input, Video input, Reasoning, Prompt caching.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="tencent/glm-5.3-flashx",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## Cost calculator

10,000 requests a day with 1,000 input and 500 output tokens each, at Tencent TokenHub's price: $0.000995 per request, $9.95 per day, $299 per month (30 days). Try other numbers at https://models.litellm.ai/calculator?model=glm-5.3-flashx

## FAQ

### How much does GLM 5.3 Flashx cost?

GLM 5.3 Flashx costs $0.37 per 1M input tokens and $1.25 per 1M output tokens on Tencent TokenHub, with cache reads at $0.075 and cache writes at $0 per 1M tokens.

### What is the context window of GLM 5.3 Flashx?

GLM 5.3 Flashx has a 1,000,000-token context window and returns up to 128,000 tokens per response.

### Which providers offer GLM 5.3 Flashx?

GLM 5.3 Flashx is available from Tencent TokenHub through LiteLLM, using the model name tencent/glm-5.3-flashx.

### How do I call GLM 5.3 Flashx with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="tencent/glm-5.3-flashx", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### What features does GLM 5.3 Flashx support?

GLM 5.3 Flashx supports function calling, structured output, image input, video input, reasoning and prompt caching.

### When did LiteLLM add GLM 5.3 Flashx?

GLM 5.3 Flashx was added to LiteLLM's model price file on September 19, 2026.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json. Maintainers update it from each provider's published pricing, and this page is usually rebuilt within 20 minutes of every change.