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ReasoningAvailable now
GLM 5.3
When complexity demands more than an answer.
Autonomous coding at near-frontier quality: open weights, strong on Terminal Bench 3.0 and long-horizon agent tasks.
Good for
- 01Complex reasoning across long-horizon tasks.
- 02Power advanced coding agents and development workflows.
- 03Reason across massive datasets with up to 1M tokens of context.
- Coding
- AI agents
- Data & analytics
Premium reasoning when your workloads demand more. Scale with transparent token-based pricing.
Key facts
- Model origin
- GLM
- Context window
- 1M tokens
- Size
- 744B MoE · 40B active
- Modalities
- text
- API model id
- glm-5.3
- Availability
- EUUSALATAM
Your data boundary
Prompts and outputs are not stored by default. Knowledge or Memory data that your organization intentionally persists is encrypted, pinned to the selected region, isolated to authorized organizational scopes, and never used to train shared or third-party models.
Try it from your region · LATAM
# Region endpoint — OpenAI-compatible /v1 base URL (https://api.latam.ccsio.ai/v1)
export CCSIO_AI_API_KEY=<your-api-key> # placeholder, issued with your region
import os
from openai import OpenAI # the standard OpenAI client
client = OpenAI(
base_url="https://api.latam.ccsio.ai/v1", # the routed market's API URL
api_key=os.environ["CCSIO_AI_API_KEY"],
)
response = client.chat.completions.create(
model="qwen3.8-flash-next", # Qwen 3.8; GET /v1/models lists every model
messages=[{"role": "user", "content": "Hello"}],
)Works well with
ReasoningAvailable nowGLM 5.3 FlashEfficient premium reasoning & agentsReasoningAvailable nowDeepSeek V4.1 Flash 1017Premium reasoning for complex challengesEmbeddingsAvailable nowQwen3 Embedding 0.6BMultilingual search across 100+ languages
More models
Qwen 3.8DeepSeek V4.1 Flash 1017GLM 5.3 FlashClefmxbai-embed-large v1Qwen3 Embedding 0.6BWhisper large v3KokoroFLUX.2 [klein]
Included unlimited* on every plan*
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Start with control
Create your account and pick the region your data must stay in.