# z-ai/glm-5.3-flash @ nextbit/fp8

- **TrackLLM** — machine-readable twin of [endpoints/z-ai2fglm-5.3-flash23nextbit2ffp8.html](https://www.trackllm.net/endpoints/z-ai2fglm-5.3-flash23nextbit2ffp8.html). Every page on the site has a `.md` sibling at the same path; links below point at those.
- **Atom feed** of this page's detected changes: [feeds/endpoints/z-ai2fglm-5.3-flash23nextbit2ffp8.xml](https://www.trackllm.net/feeds/endpoints/z-ai2fglm-5.3-flash23nextbit2ffp8.xml)
- **JSON** this page is rendered from: [data/models/z-ai2fglm-5.3-flash.json](https://www.trackllm.net/data/models/z-ai2fglm-5.3-flash.json) (model JSON) · [data/b3it/z-ai2fglm-5.3-flash23nextbit2ffp8/b3it.json](https://www.trackllm.net/data/b3it/z-ai2fglm-5.3-flash23nextbit2ffp8/b3it.json) (B3IT JSON)
- **Raw data** (every collected response): https://github.com/timothee-chauvin/trackllm_data · Built 2026-09-09 09:47 UTC

[Home](https://www.trackllm.net/index.md) / [z-ai](https://www.trackllm.net/orgs/z-ai.md) / [glm-5.3-flash](https://www.trackllm.net/models/z-ai2fglm-5.3-flash.md) / @ nextbit/fp8

Model: [z-ai/glm-5.3-flash](https://www.trackllm.net/models/z-ai2fglm-5.3-flash.md) · Served by: [Nextbit](https://www.trackllm.net/providers/nextbit.md) (fp8) · Organization: [z-ai](https://www.trackllm.net/orgs/z-ai.md) · Methods: `B3IT`

glm-5.3-flash is served by 20 providers (see the model page).
nextbit serves 17 models (see the provider page).

## Tracking status

- **LT** — no logprobs: This endpoint does not return logprobs, so logprob tracking is impossible.
- **B3IT** — monitoring: This endpoint is actively monitored through its border inputs.

## Drift from baseline

Both signals measure how far this endpoint's behavior has moved from its reference period. LT tracks the average change in the returned tokens' log-probabilities (nats); B3IT tracks the total-variation distance of the border-input votes (0–1). Both should ideally be as close to 0 as possible.

Full series: [data/models/z-ai2fglm-5.3-flash.json](https://www.trackllm.net/data/models/z-ai2fglm-5.3-flash.json)

Full series: [data/b3it/z-ai2fglm-5.3-flash23nextbit2ffp8/b3it.json](https://www.trackllm.net/data/b3it/z-ai2fglm-5.3-flash23nextbit2ffp8/b3it.json)

## Detected changes

No change detected so far.

## Spend

What OpenRouter billed for tracking this endpoint. Spend recorded since 2026-09-02.

| Total to date | Last 30 days | Queries |
| --- | --- | --- |
| $0.050 | $0.050 | 20609 |

## Methods

- **LT — logprob tracking.** Primary signal where the provider returns logprobs. The drift is the mean absolute change in the returned tokens' log-probabilities versus the reference period (nats). A detected changepoint is published once the level shift across it — mean drift over the 7 days after minus the 7 days before — reaches 0.1 nats; that shift is the magnitude shown.
- **B3IT — border inputs.** Black-box fallback for endpoints that hide logprobs. Tracks how far the top-token votes on a ranked set of near-tie prompts have moved from the reference distribution (total variation, 0–1).

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Data collected via the OpenRouter API. [Home](https://www.trackllm.net/index.md) · [Changes](https://www.trackllm.net/changes.md) · [Providers](https://www.trackllm.net/providers.md) · [Endpoints](https://www.trackllm.net/endpoints.md) · [Methodology](https://www.trackllm.net/methodology.md) · [About](https://www.trackllm.net/about.md) · [GitHub](https://www.trackllm.net/github.md)