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Z.ai

GLM 5.3 Flash

FTI
21

5 sources, 4 independent of the vendor: centre 21.

how FTI is computed

#20 of 72 with an FTI score
Context1Mtokens
Imagesyesimage input
Free now1 of 2channels
Tested by us1 of 2channels measured

Where it's free now 2 channels tracked

OpenCode Zen live
no end announced
free since Oct 16
works · Oct 16per-IP limit
Checked Nov 1 · catalogue

Also free through programs whose allowance covers this model · amounts are shared with other models

Freebuff Free Plan Daily Allowance live30 hours refilled daily, no card; usage measured in hours with a per-model multiplier a day account
Huawei Cloud CodeArts daily free tokens live10M tokens a day on the promo models; resets at 24:00 UTC+8, first come first served a day account

Free periods one bar per channel; markers are events

free so farpast announced endofficial end aheadinferred end aheadno end announcedended / not answering● event · ◆ end announced · tap one to see it

What happened newest first · times link to the source

Wed, Oct 286 days ago
endedGLM 5.3 Flash · SiliconFlowended
SiliconFlow rendered pricing table lists zai-org/GLM-5.3-Flash at ¥0.80/¥2.80 per M tokens (cache ¥0.23), contradicting the model plaza price field "0"; treated as paid, not free
Source: SiliconFlow pricing page
Fri, Oct 1618 days ago
became availableGLM 5.3 Flash · OpenCode Zenlive
GLM 5.3 Flash is free on OpenCode Zen: listed Free for input, output and cached reads in the Zen price table and present in the model catalogue; three coding-agent runs on 2026-10-16 cost nothing (two passed, the third aborted on an upstream rate limit)
Source: OpenCode Zen model list, price table and our own agent runs

Channel details

OpenCode Zen live✓ humans✓ agents

Tested by us
works · Oct 16per-IP limitthrottled under load0 credits used
ⓘ3 coding-agent runs: 2 passed, 3rd hit upstream limit · checked Oct 16 · 3 checks
Model ID
opencode/glm-5.3-flash-free
To start
$0 · no account Free models run inside the OpenCode app with no account; the Zen API key route needs billing details
Use it
CLI only
Free condition
Inside the OpenCode app, no account; the raw API refuses free models (403 FreeTierError); Limited time; no end date published
Limit (stated)
not published
Started
Oct 16
End
no end announced free since Oct 16
Data policy
no retention
Channel type
agent tool
Checked
Nov 1 · catalogue

SiliconFlow ended✕ humans✕ agents

Tested by us
not measured
Model ID
zai-org/GLM-5.3-Flash
To start
$0 · account SiliconFlow account; real-name verification is mandatory to use the platform at all (since 2026-05-15 unverified accounts are blocked)
Use it
API · 2 formats
Free condition
SiliconFlow account + real-name verification (mandatory since 2026-05-15: unverified accounts cannot use the platform); free models at price 0 within fixed rate limits
Limit (stated)
published
ⓘfixed rate limits; spending doesn't raise them
Started
not recorded; first seen 2026-10-27
End
ended 6 days ago Oct 28
Data policy
no retention
Channel type
router
Checked
Oct 28 · listing only