# GLM-5.3

GLM-5.3 costs $0.98 per 1M input tokens and $3.08 per 1M output tokens on LLM API, with a 1M-token context window.

Model ID: `glm-5.3` · Z.ai · Text generation · Released August 14, 2026
Updated: 2026-10-27
Canonical: https://llmapi.ai/models/zhipu-glm-5-3/

- Input: $0.98 (list $1.3111) per 1M tokens
- Output: $3.08 (list $3.9332) per 1M tokens
- Cache read: $0.14 per 1M tokens
- Context: 1M tokens
- Max output: 262K tokens

## Pricing

Lowest price among 8 providers, after discounts.

| Price | Amount | Per |
| --- | --- | --- |
| Input | $0.98 (list $1.3111) | per 1M tokens |
| Output | $3.08 (list $3.9332) | per 1M tokens |
| Cache read | $0.14 | per 1M tokens |
| Cache write, 5 minutes | $2.1 | per 1M tokens |

**Volume pricing.** At higher monthly volume, GLM-5.3 may cost less. Book a call and sales will quote a price for your usage. [Book a call with sales](https://meetings.hubspot.com/julia-andriienko/llmapi) or [Create an account first](https://app.llmapi.ai/signup).

## Providers

Prices after each provider’s discount; the lowest in bold.

| Provider | Input / 1M | Output / 1M | Cache read / 1M | Context | Max output |
| --- | --- | --- | --- | --- | --- |
| [Novita AI](https://llmapi.ai/providers/novita/) (−10%) | $1.26 | $3.96 | $0.234 | 1M | 131K |
| [Alibaba Cloud](https://llmapi.ai/providers/alibaba-cloud/) (−30%) | **$0.98** | **$3.08** | $0.196 | 1M | 131K |
| [Z.ai](https://llmapi.ai/providers/zai/) | $1.4 | $4.4 | $0.26 | 1M | 131K |
| [Together AI](https://llmapi.ai/providers/together-ai/) | $1.4 | $4.4 | $0.26 | 1.05M | 262K |
| [ComputeBase](https://llmapi.ai/providers/computebase/) | $1.4 | $4.4 | **$0.14** | 1M | 131K |
| [Melious](https://llmapi.ai/providers/melious/) (−10%) | $1.18 | $3.5399 | $0.2361 | 1M | 131K |
| [CanopyWave](https://llmapi.ai/providers/canopywave/) | $1.4 | $4.4 | $0.26 | 1M | 131K |
| [AWS Bedrock](https://llmapi.ai/providers/amazon-bedrock/) | $1.68 | $5.28 | $0.312 | 1M | 128K |

## Features

- Tools: Yes
- Parallel tool calls: No
- Image input: No
- Reasoning: Yes (Levels: low, high, max · default high)
- Prompt caching: Yes
- Structured outputs: Yes
- JSON mode: Yes
- Streaming: Yes
- Web search: Yes

## Call GLM-5.3

### Chat Completions (`POST /v1/chat/completions`)

Set LLMAPI_KEY to your LLM API key.

```python
import os

from openai import OpenAI

client = OpenAI(
    base_url="https://api.llmapi.ai/v1",
    api_key=os.environ["LLMAPI_KEY"],
)

response = client.chat.completions.create(
    model="glm-5.3",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)
```

Docs: [Chat Completions docs](https://docs.llmapi.ai/api/v1/chat/completions)

## More from Z.ai

- [GLM-5.3-Flash](https://llmapi.ai/models/zhipu-glm-5-3-flash/): $0.118 / $0.472 per 1M input / output
- [GLM 5.2](https://llmapi.ai/models/zhipu-zai-glm-5-2/): $0.84 / $2.64 per 1M input / output
- [GLM-5V-Turbo](https://llmapi.ai/models/z-ai-glm-5v-turbo/): $1.2 / $4 per 1M input / output

Prices synced 2026-11-09.

Next step: [Get API key](https://app.llmapi.ai/signup)