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GLM 5.3 Prime z-ai
Release timeline
Stages observed by the nightly radar: announced → API only → weights public → served by third parties. Each entry carries the source it was seen at.
- 2026-09-23 · API only source seeded from the earliest dated observation when first seen · observed 2026-10-07 20:20 UTC
- next · Next expected: additional third-party providers (closed weights; none expected on Hugging Face)
Description
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...
via OpenRouter listing · observed 2026-10-24 21:26 UTC. The listing text is the provider's own description, not an assessment.
Where to run 1 providers · 1 endpoints
Hosted endpoints observed for GLM 5.3 Prime, sorted by input price (USD per million tokens). Each row names its observer and date; prices change daily, so check the source before quoting. Cheapest observed input price: $2.80/M.
| Provider | Model ref | Context | Quant | $/M in | $/M out | tok/s | TTFT | Tools | Status | Observed |
|---|---|---|---|---|---|---|---|---|---|---|
| Alibaba openrouter | z-ai/glm-5.3-prime | 977K | unknown | $2.80 | $8.80 | — | — | yes | live | 2026-10-24 |
Third-party providers observed: 1 (Alibaba). Cache-read price $0.56/M (source, observed 2026-10-24).
Facts
| Context length | 1,000,000 tokens (977K) · OpenRouter listing |
|---|---|
| Modalities | text → text |
| Max completion tokens | 131,072 |
| 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 |
| Openness | Closed weights · open-weights lab, name matches a closed line |
| Stage | API only |
| Confidence | medium |
| Pricing (USD per M tokens) |
in $2.80 · out $8.80 · cache read $0.56 OpenRouter list price (cheapest live endpoint) · source · observed 2026-10-24 21:26 UTC |
Open alternatives 5
Nearest open-weights models by modality, context and price on this watch list. Not a quality ranking.
| Model | Org | Params | Context | $/M in | License | Why it is here |
|---|---|---|---|---|---|---|
| Meta-Llama-3-8B-Instruct | meta-llama | 8.03B | — | — | llama3 | closest by rank, context and price |
| Llama-3.1-8B | meta-llama | 8.03B | — | — | llama3.1 | closest by rank, context and price |
| Meta-Llama-3-8B | meta-llama | 8.03B | — | — | llama3 | closest by rank, context and price |
| Llama-2-13b-chat-hf | meta-llama | 13.0B | — | — | llama2 | closest by rank, context and price |
| DeepSeek-V4-Pro | deepseek-ai | 1.60T | 1M | $0.21 | mit | similar context (1.05M), cheaper input price ($0.20787/M vs $2.8/M) |
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- /feeds/upcoming.xml(RSS 2.0) · upcoming and just-released models, one item per entry
- /feeds/upcoming.json(JSON Feed 1.1) · same, JSON Feed 1.1
Email alerts are not open yet; the feeds above are the same data. See feeds for the item schema.
Sources
- openrouter z-ai/glm-5.3-prime · observed 2026-10-24 21:26 UTC
Radar run: 2026-10-25 06:51 UTC · Last verified 2026-10-25 06:51 UTC