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GLM 5.3 FlashX 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.
- 2026-09-18 · 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-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, a native multimodal model delivering inference speeds of up to 200 tokens/s. Built on the same hybrid sparse and linear attention architecture...
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 FlashX, 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: $0.37/M.
| Provider | Model ref | Context | Quant | $/M in | $/M out | tok/s | TTFT | Tools | Status | Observed |
|---|---|---|---|---|---|---|---|---|---|---|
| Z.AI openrouter | z-ai/glm-5.3-flashx | 1M | fp8 | $0.37 | $1.25 | — | — | yes | live | 2026-10-24 |
No third-party providers observed beyond the lab's own endpoints. Cache-read price $0.09/M (source, observed 2026-10-24).
Facts
| Context length | 1,048,576 tokens (1M) · OpenRouter listing |
|---|---|
| Modalities | text + image + video → text |
| Max completion tokens | 131,072 |
| Supported parameters | include_reasoning, max_tokens, reasoning, reasoning_effort, response_format, temperature, tool_choice, tools, top_k, top_p |
| Openness | Closed weights · open-weights lab, name matches a closed line |
| Stage | API only |
| Confidence | medium |
| Pricing (USD per M tokens) |
in $0.37 · out $1.25 · cache read $0.09 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 |
|---|---|---|---|---|---|---|
| Kimi-K3 | moonshotai | 2.78T | 1M | $0.23 | other | similar context (1.05M), cheaper input price ($0.2261/M vs $0.37/M), vision input |
| MiniMax-M3 | MiniMaxAI | 427B | 1M | $0.22 | other | similar context (1.05M), cheaper input price ($0.224/M vs $0.37/M), vision input |
| DeepSeek-V4.1-Flash-1017 | deepseek-ai | 763B | 1M | $0.20 | mit | similar context (1.05M), cheaper input price ($0.2/M vs $0.37/M), vision input |
| Qwen3.5-397B-A17B | Qwen | 403B | 256K | $0.39 | apache-2.0 | vision input |
| Kimi-K2.6 | moonshotai | 1.03T | 256K | $0.45 | other | vision input |
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Sources
- openrouter z-ai/glm-5.3-flashx · observed 2026-10-24 21:26 UTC
Radar run: 2026-10-25 06:51 UTC · Last verified 2026-10-25 06:51 UTC