GLM 5.3 Prime model profile

Profile facts

Profile type

Model research profile

Provider or publisher

Z.ai

Context window

1,000,000 tokens

Snapshot date

2026-10-13

Knowledge cutoff

Not disclosed

Reference catalog ID

z-ai/glm-5.3-prime

When to pick GLM 5.3 Prime

GLM 5.3 Prime is a reference profile: Z.ai publishes it, Kendr documents it for comparison, and it carries no Kendr alias to call.

Each condition below is derived from this model's own values in the 2026-10-13 snapshot, compared only against models publishing the same field.

• Reach for it when the model has to call tools. Tool calling is recorded in the snapshot, so this route can drive an agent loop rather than only answer in prose.
• Look elsewhere when you need to call it through Kendr today. This is a research reference profile with no Kendr alias. The facts and evidence here are published for comparison; the model is not routable on Kendr.
• Look elsewhere when the request is trivial and latency-sensitive. Reasoning is mandatory on this route and cannot be turned off, so short factual requests still pay reasoning tokens and reasoning latency.

Context, modalities, and identity

GLM 5.3 Prime accepts text and returns text. The snapshot records prompt caching, reasoning controls, structured output, text generation, and tool calling as capabilities or interfaces.

Provider or publisher

Z.ai

Context window

1,000,000 tokens

Maximum output

131,072 tokens

Input modalities

text

Output modalities

text

Knowledge cutoff

Not disclosed

Model overview

GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token context window and up to 128K output tokens, and targets coding and agentic workloads, including long-horizon multi-turn agent orchestration, real-time conversation, and streaming code generation. Reasoning is always on and cannot be disabled. Reasoning efforts low, high, and max are supported; max is the default.

Reference model ID

z-ai/glm-5.3-prime

Canonical version

z-ai/glm-5.3-prime-20260921

Hugging Face ID

Not separately documented

Capabilities and supported controls

Capabilities and parameters are reported from the dated catalog and source records; their presence does not guarantee identical behavior across every provider route.

Supported parameters

frequency_penalty, include_reasoning, logprobs, max_tokens, presence_penalty, reasoning, reasoning_effort, response_format, seed, stop, temperature, tool_choice, tools, top_k, top_logprobs, top_p

• prompt caching
• reasoning controls
• structured output
• text generation
• tool calling

Dated pricing snapshot

The dated reference snapshot lists $2.8 input and $8.8 output per million tokens. Cached input is $0.56 per million tokens.

These are dated third-party reference prices, not Kendr prices or an availability offer. Routes, tiers, caching, region, and provider policy can change the landed price.

Price date

2026-10-13

Input

$2.8 per 1M tokens

Cached input

$0.56 per 1M tokens

Output

$8.8 per 1M tokens

Provider routes, performance, and uptime

The snapshot retains 1 provider endpoint. Provider prices, context limits, p50 performance, and uptime can differ by route and are not Kendr guarantees.

Active provider endpoints

1

Best p50 latency

0.77 s

Best p50 throughput

72 tok/s

Availability with routing

99.56% over the sampled window

Availability without routing

99.56% over the sampled window

Performance date

2026-10-13

Benchmark evidence and limitations

No comparable third-party benchmark value is present in the 2026-10-13 snapshot. Missing values are not estimated.

Third-party catalog fields normalized from the cited model dataset; benchmark methodology and coverage differ by source.

Popularity and market context

GLM 5.3 Prime ranked #88 in the cited trailing-7-day third-party catalog usage dataset as of 2026-10-13. Observed within the cited trailing-7-day third-party catalog usage dataset; this is not global AI market share.

Third-party catalog rank

#88

Global market share

Not inferred

Observation date

2026-10-13

Frequently asked questions

Sources and evidence dates

1. GLM 5.3 Prime third-party catalog record (catalog, checked 2026-10-13)
2. Third-party model catalog methodology (methodology, checked 2026-10-13)
3. Z.ai official model documentation (primary, checked 2026-10-13)