Specification

Release date: 26 Aug 2026
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Openness: open-weights
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 1 h agomedium
Parameters: 321.3B
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 1 h agomedium
Context window: 1.31M tokens
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Max output: 131.1K tokens
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Modalities: image, text, video
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Input modalities: image, text, video
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Output modalities: text
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Hugging Face repo: zai-org/GLM-5.3-Flash
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Pipeline tag: image-text-to-text
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 1 h agomedium
Model card: huggingface.co/zai-org/GLM-5.3-Flash
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 1 h agomedium
Downloads: 1,173,520
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 59 min agomedium
Likes: 2,248
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 59 min agomedium
Last modified: 2026-09-07T12:13:47+00:00
Source:Hugging Face Hub (public pages, model cards, papers)T2observed 1 h agomedium
Openrouter expiration date: 31 Dec 2098
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Openrouter id: z-ai/glm-5.3-flash
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Supported parameters: frequency_penalty, include_reasoning, logit_bias, logprobs, max_tokens, min_p, presence_penalty, reasoning, reasoning_effort, repetition_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_logprobs, top_p
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

22

Source tiers

T222

Freshest observation

59 min ago

Conflicts

None

Modalities

Modalities: imagetextvideo
Input: imagetextvideo
Output: text

Capabilities

Tool calling
Yes
OpenRouter public model & pricing listing · T2
Structured output
Yes
OpenRouter public model & pricing listing · T2
Reasoning
Yes
OpenRouter public model & pricing listing · T2
Vision
Yes
OpenRouter public model & pricing listing · T2
Audio
Unavailable
Fine-tuning available
Unavailable

Context window: 1.31M tokens
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Max output: 131.1K tokens
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium

No benchmark results recorded

Results appear when a tier 1–3 source publishes them; we never copy scores without a source.

Current prices

Current prices per 1M tokens
Provider	Input / 1M	Output / 1M	Cached in	Batch in / out	Context	Observed	Source
Z.ai APIz-ai/glm-5.3-flash:batch	$0.075	$0.25	$0.015	—	1.05M	1 h ago	openrouter.aiT2
Fireworks AIfireworks/glm-5p3-flash	$0.15	$0.50	$0.03	—	—	1 h ago	app.fireworks.aiT1
Z.ai APIz-ai/glm-5.3-flash	$0.15	$0.50	$0.03	—	1.05M	1 h ago	openrouter.aiT2

USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.

Available through 2

Fireworks AI Z.ai API

Price history

Input price · USD / 1M tokens

Output price · USD / 1M tokens

Fireworks AI
Z.ai API

Estimated

Memory need = bytes per parameter (4-bit ≈ 0.5 × 1.15 overhead, 8-bit 1.0, fp16 2.0) + a KV-cache allowance. Not a measurement.

Estimated hardware fit
Hardware	Quantization	Memory	Est. need	Fits
Apple M3 Ultra	4bit	—	185.3 GB	Yes
AMD Instinct MI325X	4bit	256 GB	185.3 GB	Yes
AMD Instinct MI300X	4bit	192 GB	185.3 GB	Yes
Apple M2 Ultra	4bit	—	185.3 GB	Yes
NVIDIA B200	4bit	180 GB	185.3 GB	No
NVIDIA H200	4bit	141 GB	185.3 GB	No
Apple M1 Ultra	4bit	—	185.3 GB	No
Apple M3 Max	4bit	—	185.3 GB	No
Apple M4 Max	4bit	—	185.3 GB	No
NVIDIA DGX Spark	4bit	128 GB	185.3 GB	No
Apple M2 Max	4bit	—	185.3 GB	No
NVIDIA A100 80GB	4bit	80 GB	185.3 GB	No
NVIDIA H100 SXM	4bit	80 GB	185.3 GB	No
Apple M1 Max	4bit	—	185.3 GB	No
Apple M4 Pro	4bit	—	185.3 GB	No
Apple M3 Pro	4bit	—	185.3 GB	No
Apple M1 Pro	4bit	—	185.3 GB	No
Apple M2 Pro	4bit	—	185.3 GB	No
Apple M4	4bit	—	185.3 GB	No
NVIDIA GeForce RTX 5090	4bit	32 GB	185.3 GB	No
Apple M2	4bit	—	185.3 GB	No
Apple M3	4bit	—	185.3 GB	No
NVIDIA GeForce RTX 3090	4bit	24 GB	185.3 GB	No
NVIDIA GeForce RTX 4090	4bit	24 GB	185.3 GB	No
Apple M1	4bit	—	185.3 GB	No

No lineage recorded

Lineage comes from explicit `derived_from`, `fine_tuned_from`, `distilled_from` and `quantized_from` relations stated by sources.

Papers 0

No papers linked yet.

Repositories 0

No repositories linked yet.

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history

22 claims · 22 properties

Release daterelease_date1

Claim history for Release date
Value	Valid from → to	Status	Source	Confidence	Extractor
26 Aug 2026	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Opennessopenness1

Claim history for Openness
Value	Valid from → to	Status	Source	Confidence	Extractor
open-weights	11 Sept 2026 21:12 UTC → current	current	Hugging Face Hub (public pages, model cards, papers)T2	medium	deterministic

Parametersparameter_count1

Claim history for Parameters
Value	Valid from → to	Status	Source	Confidence	Extractor
321.3B	11 Sept 2026 21:12 UTC → current	current	Hugging Face Hub (public pages, model cards, papers)T2	medium	deterministic

Context windowcontext_length1

Claim history for Context window
Value	Valid from → to	Status	Source	Confidence	Extractor
1.31M tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Max outputmax_output_tokens1

Claim history for Max output
Value	Valid from → to	Status	Source	Confidence	Extractor
131.1K tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Modalitiesmodalities1

Claim history for Modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
image, text, video	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Input modalitiesmodalities_input1

Claim history for Input modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
image, text, video	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Hugging Face repohf_repo1

Claim history for Hugging Face repo
Value	Valid from → to	Status	Source	Confidence	Extractor
zai-org/GLM-5.3-Flash	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Pipeline tagpipeline_tag1

Claim history for Pipeline tag
Value	Valid from → to	Status	Source	Confidence	Extractor
image-text-to-text	11 Sept 2026 21:12 UTC → current	current	Hugging Face Hub (public pages, model cards, papers)T2	medium	deterministic

Model cardmodel_card_url1

Claim history for Model card
Value	Valid from → to	Status	Source	Confidence	Extractor
https://huggingface.co/zai-org/GLM-5.3-Flash	11 Sept 2026 21:12 UTC → current	current	Hugging Face Hub (public pages, model cards, papers)T2	medium	deterministic

Downloadsmetric.downloads1

Claim history for Downloads
Value	Valid from → to	Status	Source	Confidence	Extractor
1,173,520	11 Sept 2026 21:12 UTC → current	current	Hugging Face Hub (public pages, model cards, papers)T2	medium	deterministic

Likesmetric.likes1

Claim history for Likes
Value	Valid from → to	Status	Source	Confidence	Extractor
2,248	11 Sept 2026 21:12 UTC → current	current	Hugging Face Hub (public pages, model cards, papers)T2	medium	deterministic

Descriptiondescription1

Claim history for Description
Value	Valid from → to	Status	Source	Confidence	Extractor
GLM-5.3-Flash is a native multimodal model from Z.ai. It is suited for efficient coding and long-horizon agent tasks. Its hybrid sparse and linear attention architecture maintains accurate long-context behavior while...	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Last modifiedlast_modified1

Claim history for Last modified
Value	Valid from → to	Status	Source	Confidence	Extractor
2026-09-07T12:13:47+00:00	11 Sept 2026 21:12 UTC → current	current	Hugging Face Hub (public pages, model cards, papers)T2	medium	deterministic

Openrouter expiration dateopenrouter_expiration_date1

Claim history for Openrouter expiration date
Value	Valid from → to	Status	Source	Confidence	Extractor
31 Dec 2098	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
Value	Valid from → to	Status	Source	Confidence	Extractor
z-ai/glm-5.3-flash	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Reasoningreasoning1

Claim history for Reasoning
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Structured outputstructured_output1

Claim history for Structured output
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
Value	Valid from → to	Status	Source	Confidence	Extractor
frequency_penalty, include_reasoning, logit_bias, logprobs, max_tokens, min_p, presence_penalty, reasoning, reasoning_effort, repetition_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_logprobs, top_p	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tool callingtool_calling1

Claim history for Tool calling
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Visionvision1

Claim history for Vision
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

11 Sept 2026
Listed by providerModelGLM 5.3 FlashZ.ai (Zhipu AI)
Z.ai API lists GLM 5.3 Flash at $0.075 in / $0.25 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelGLM 5.3 FlashZ.ai (Zhipu AI)
Z.ai API lists GLM 5.3 Flash at $0.15 in / $0.5 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
New modelModelGLM 5.3 FlashZ.ai (Zhipu AI)
New model: GLM 5.3 Flash
fireworks_pricing
docs.fireworks.ai
11 Sept 2026
Listed by providerModelGLM 5.3 FlashZ.ai (Zhipu AI)
Fireworks AI lists GLM 5.3 Flash at $0.15 in / $0.5 out per 1M tokens
fireworks_pricing
app.fireworks.ai

Full timeline →

Source documents
Source	Document	Type	Tier	Last observed	Snapshots
Fireworks AI — pricing	docs.fireworks.ai/serverless/pricing.md	pricing	T1· Official	1 h ago	1
Hugging Face Hub (public pages, model cards, papers)	huggingface.co/models?author=zai-org&p=0&sort=downloads	listing	T2· Quality secondary	59 min ago	2
OpenRouter public model & pricing listing	openrouter.ai/api/v1/models	catalogue	T2· Quality secondary	1 h ago	1

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.