OpenFill is in development. Inference is off, but is tested end to end, and will switch on at launch. All data currently on the site is for live testing: it will be erased at launch.

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openfill

GLM 5.3 Flash

Zhipu AI glm-5.3-flash

The first natively multimodal model in the GLM 5 series, with hybrid sparse and linear attention.

  • Reasoning
  • Vision
  • Tool use
  • JSON mode
  • Fixed price
Input
$0.1000
Cache hit $0.0200
Output
$0.3000
Per 1M tokens
Context
1M
128k max output
First token
1.71 s
Typical, last 7 days
Throughput
159 tok/s
Typical, last 7 days

Specifications

Developer
Zhipu AI
Architecture
Mixture of experts, 320B total and 18B active
Weights
FP8
Context length
1,048,576 tokens
Max output
128,000 tokens
Modalities
Text and images in, text out
Reasoning effort
low, high, max; default max
Model id
glm-5.3-flash
Pricing
Fixed price
Weights published
zai-org/GLM-5.3-Flash

max_tokens above the max output is clamped down to it.

Prices

USD per 1M tokens
Cache-hit input
$0.0200
Cache-miss input
$0.1000
Output
$0.3000

A typical request

A 10,000-token prompt, half of it cached, with a 1,000-token answer: $0.0009

GET /v1/models carries the prices in force.

Performance

last 7 days · OpenFill traffic

Time to the first token, generation speed and cache hits on this model's own requests.

First token
1.71 s
p95 4.23 s
Throughput
159 tok/s
Slowest 5% under 96.6 tok/s
Cache hits
93%
Of prompt tokens
Requests
153
100% streamed
By prompt size
PromptFirst tokenThroughputCache hits
Under 1k
713 ms
147 tok/s
0%
1k to 4k
Pending
Pending
Pending
4k to 16k
Pending
Pending
Pending
16k to 64k
Pending
Pending
Pending
64k to 256k
2.26 s
177 tok/s
97%
256k and over
Pending
Pending
Pending

Typical requestFirst token at p95

Uptime, last 24 hours

Each check is a chat completion through the public API, run the way the models board describes.

Uptime

Pending

Checks

0

Failures

0

Latency

Pending

Queue wait

Pending

Checks begin once capacity is serving this model.

24h agoNow
All checks passedFailed, drawn in proportionAwaiting capacity
Model glm-5.3-flash Base URL https://api.openfill.ai/v1

Set OPENFILL_API_KEY to a key from API keys before running an example. A key starts with of_live_ and is shown once.

Read docs
import osfrom openai import OpenAI client = OpenAI(    base_url=(        "https://api.openfill.ai/v1"    ),    api_key=os.environ[        "OPENFILL_API_KEY"    ],) r = client.chat.completions.create(    model="glm-5.3-flash",    messages=[        {"role": "user", "content": "hi"}    ],)print(r.choices[0].message.content)print(r.usage)