GLM 5.3 FlashX
Open-weights chat model from Z.AI. One API key reaches all 3 providers, with automatic failover.
No card required. Start with 1 million free tokens.
About GLM 5.3 FlashX
GLM 5.3 FlashX is an open-weights chat model published by Z.AI, with a 1,048,576-token context window. Through TrustedRouter it runs on 3 providers, with options in the US, from $0.39 per million input tokens.
- Model ID
z-ai/glm-5.3-flashx- Publisher
- Z.AI
- Modes
- chat
- Billing
- Credits or your own provider key
Set it up with your agent
Paste this into Claude Code, Cursor or any coding agent.
Use GLM 5.3 FlashX through TrustedRouter in this project.
1. Read https://trustedrouter.com/llms.txt
2. Point the OpenAI-compatible client at
https://api.trustedrouter.com/v1 and read the key from
TRUSTEDROUTER_API_KEY.
3. Set the model to z-ai/glm-5.3-flashx.
4. Run the tests, then show me the diff before committing.import os
from openai import OpenAI
client = OpenAI(
base_url="https://api.trustedrouter.com/v1",
api_key=os.environ["TRUSTEDROUTER_API_KEY"],
)
response = client.chat.completions.create(
model="z-ai/glm-5.3-flashx",
messages=[{"role": "user", "content": "What is the capital of France?"}],
)
print(response.choices[0].message.content)curl https://api.trustedrouter.com/v1/chat/completions \
-H "Authorization: Bearer $TRUSTEDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "z-ai/glm-5.3-flashx",
"messages": [{"role": "user", "content": "What is the capital of France?"}]
}'Providers
Your key goes to the cheapest healthy provider and fails over on its own. Open a row for retention, location and weight format, or see how we check privacy claims and the live speed leaderboard.
| Provider | Input | Cached | Output | Cost per 1M in + out | Details |
|---|---|---|---|---|---|
Novita AI
|
$0.390 | $0.0791 | $1.32 | $1.71 | |
|
Retention Verification: privacy unknown. No provider-ZDR claim is tracked here. Novita's privacy policy says personal information is not used for model training; customer-content processing is governed by customer agreements. Location Operator country: US Headquarters / registered office: San Francisco, California, United States. Company location source (reviewed 2026-09-27). Inference: Shared inference API; processing countries unconfirmed, no fixed-region commitment. No exhaustive inference-country list verified for the shared model API. Novita publishes worldwide GPU rental regions, but that separate product does not establish shared serverless model placement. Region pinning through TR: Not supported by the current TrustedRouter integration. Reviewed 2026-10-28. Weight format Unknown Price and speed Input $0.39035/1M · Cached input $0.079125/1M · Output $1.31875/1M TTFT: insufficient data Speed: insufficient data |
|||||
Tencent Cloud TokenHub
|
$0.390 | $0.0791 | $1.32 | $1.71 | |
|
Retention Verification: privacy unknown. TokenHub's Singapore API uses global resource scheduling, not a Singapore-only inference guarantee. Only canaried chat routes with matching regional USD prices are enabled. No verified contractual ZDR, confidential-compute, or upstream E2EE claim is tracked. Location Operator country: Not verified Headquarters / registered office: Not verified. Inference: Global, dynamically scheduled inference; no fixed-country residency commitment. The Singapore TokenHub ingress uses global resource scheduling. Ingress location is not GPU residency. Region pinning through TR: Not supported by the current TrustedRouter integration. Reviewed 2026-09-29. Weight format Unknown Price and speed Input $0.39035/1M · Cached input $0.079125/1M · Output $1.31875/1M TTFT: 2.38 s Speed: insufficient data Last sample: |
|||||
|
Z.AI
|
$0.390 | $0.0791 | $1.32 | $1.71 | |
|
Retention Verification: privacy unknown. No provider-ZDR claim is tracked here. Z.AI/BigModel policy source is linked for users who need to review API retention and processing terms. Location Operator country: SG Headquarters / registered office: Not verified. Inference: Inference location not verified; no country-specific residency commitment. No inference-location declaration has been verified for this provider. Region pinning through TR: No verified provider-specific location pin documented here. Weight format Unknown Price and speed Input $0.39035/1M · Cached input $0.079125/1M · Output $1.31875/1M TTFT: insufficient data Speed: insufficient data Last sample: |
|||||
Append :nitro to the model ID, or send "provider": {"sort": "throughput"}, to route to the fastest provider instead.
Questions
What model ID should I use for GLM 5.3 FlashX?
Use z-ai/glm-5.3-flashx as the model field with the TrustedRouter OpenAI-compatible API. Credits routing and provider fallback happen behind that model ID.
Do you log my prompts or outputs?
No. Prompt and output content are intentionally excluded from the control plane and metadata systems. Optional content export requires explicit destination-level configuration.
Which providers serve GLM 5.3 FlashX?
TrustedRouter currently lists Z.AI, Novita AI, and Tencent Cloud TokenHub for GLM 5.3 FlashX. Provider availability and routing eligibility can change as catalog and health data update.
How much does GLM 5.3 FlashX cost through TrustedRouter?
The current lowest Credits input price is $0.39035/1M and the lowest Credits output price is $1.31875/1M. Prices are per one million tokens and come from the current route catalog.
How do I require zero data retention for GLM 5.3 FlashX?
Set provider.min_privacy to zdr on the request. TrustedRouter considers only routes with a recorded zero-data-retention posture and fails closed if no eligible route remains.
GLM 5.3 FlashX vs other models
Start building with GLM 5.3 FlashX.
No card required. Start with 1 million free tokens.