35%Z.ai: GLM 5.3 FlashX API
Zhipu AI·Vision
GLM-5.3-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, a native multimodal model delivering inference speeds of up to 200 tokens/s. Built on the same hybrid sparse and linear attention architecture...
Pricing
Cheapest live price, per 1 million tokens.
Input / 1M tokens
OpenRouter $0.370
Output / 1M tokens
OpenRouter $1.25
Cache read / 1M
Repeated prompt prefixes
Cache read is the discounted rate for repeated prompt prefixes (system prompts, agent context).
Capabilities · 7
Specifications
- Context window
- 1.0M
- Max output
- 131K
- Type
- Vision
- Creator
- Zhipu AI
- Live sellers
- 1
- Requests / 24h
- —
Estimated monthly cost
30 days at the cheapest live price.
Quick start
OpenAI-compatible — change the base URL and key. Get a key from the dashboard.
from openai import OpenAI
client = OpenAI(
base_url="https://api.qubax.ai/v1",
api_key="YOUR_QUBAX_API_KEY",
)
response = client.chat.completions.create(
model="glm-5.3-flashx",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)About Z.ai: GLM 5.3 FlashX
Z.ai: GLM 5.3 FlashX is a multimodal language model developed by Zhipu AI. It's particularly well-suited for analyzing images, screenshots, and visual content, tackling complex, multi-step reasoning problems, orchestrating tool-using agents that call APIs and external services, producing structured outputs for reliable data extraction and handling large contexts of up to 1.0M tokens. Its 1.0M-token context window means you can pass in entire documents, codebases, or conversation histories without losing context. It can write up to 131K tokens in a single response.
As of Oct 20, 2026, Z.ai: GLM 5.3 FlashX costs $0.499 per 1M input tokens and $1.69 per 1M output tokens on Qubax. A typical 1,000 chat requests (2K tokens in, 500 out) come to about $1.84. Pay with USDC, USDT, BTC, ETH or 350+ other coins — no credit card required.
Similar-priced alternatives
Frequently asked questions
How much does the Z.ai: GLM 5.3 FlashX API cost?
On Qubax, Z.ai: GLM 5.3 FlashX costs $0.499 per 1M input tokens and $1.69 per 1M output tokens.
Is the Z.ai: GLM 5.3 FlashX API compatible with OpenAI?
Yes. Qubax provides an OpenAI-compatible API. You can use Z.ai: GLM 5.3 FlashX as a drop-in replacement by changing your base URL to https://api.qubax.ai/v1 and using your Qubax API key. It works with Cline, Cursor, OpenCode, Hermes Agent, and any tool that supports OpenAI APIs.
How do I pay for Z.ai: GLM 5.3 FlashX API usage?
Qubax uses prepaid crypto credits. Top up with USDC, USDT, BTC, ETH, SOL or 350+ other coins and your balance is deducted as you use the API. No credit card or KYC required.
What is the context window of Z.ai: GLM 5.3 FlashX?
Z.ai: GLM 5.3 FlashX supports a context window of 1.0M tokens, allowing you to process large documents, codebases, or long conversations in a single request.
What can I build with Z.ai: GLM 5.3 FlashX?
You can use Z.ai: GLM 5.3 FlashX to analyze images and visual content, tackle complex multi-step reasoning tasks, build autonomous agents that call external tools and APIs, generate structured JSON output for data pipelines and process long documents and entire codebases. Because it's served through Qubax's OpenAI-compatible API, integration into existing apps, agents, or workflows takes just a few lines of code.
How fast and reliable is Z.ai: GLM 5.3 FlashX on Qubax?
Responses stream token by token. Latency depends on the provider and prompt length.
Z.ai: GLM 5.3 FlashX vs NVIDIA Nemotron 3 Ultra 550B: which should I choose?
Z.ai: GLM 5.3 FlashX by Zhipu AI and NVIDIA Nemotron 3 Ultra 550B by Other are both strong models in a similar price tier. Z.ai: GLM 5.3 FlashX excels at complex reasoning and supports vision/image inputs. NVIDIA Nemotron 3 Ultra 550B comes from a different lab and may have different strengths depending on your workload. On Qubax, Z.ai: GLM 5.3 FlashX starts at $0.499/1M input tokens while NVIDIA Nemotron 3 Ultra 550B comes in at $0.374/1M, so NVIDIA Nemotron 3 Ultra 550B may be worth considering if you need to minimize per-token cost. Both are available on Qubax with crypto payments and OpenAI-compatible APIs, so you can try each and switch freely.
Can I use Z.ai: GLM 5.3 FlashX for commercial projects?
Yes. Z.ai: GLM 5.3 FlashX on Qubax can be used for commercial purposes. You own the outputs you generate. Qubax provides the API infrastructure — you bring your use case.
Why use Z.ai: GLM 5.3 FlashX on Qubax?
Live market prices
Providers compete on price — you get the cheapest healthy seller.
Pay with crypto
350+ coins (BTC, ETH, SOL, USDT, USDC). No card, no KYC.
OpenAI & Anthropic compatible
Drop-in base URL. Works with Cline, Cursor, Claude Code, OpenAI and Anthropic SDKs.