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[ARTICLE · art-154981] src=trackllm.net ↗ pub= topic=large-language-models verified=true sentiment=· neutral

z-ai/glm-5.3-flash @ coreweave/nvfp4: B3IT change (TV 0.30)

OpenRouter's tracking page for the z-ai/glm-5.3-flash endpoint hosted on coreweave/nvfp4 reports a B3IT change with a total-variation distance of 0.30, while the endpoint's logprob probe failed with an HTTP 400 error because Dynamo's SGLang backend does not currently support logprobs >= 1 due to O(N) per-position detokenization. OpenRouter has billed $0.16 to date for tracking the endpoint since 2026-09-17, including $0.11 in the last 30 days across 70,354 queries, with B3IT onboarding at $0.149 and B3IT monitoring at $0.016. The page lists no detected changes in its changes table and shows the endpoint under active monitoring through its border inputs.

read1 min views11 publishedOct 13, 2026

Tracking status #

LT

probe failed— This endpoint claims logprob support, but our probe could not obtain usable logprobs. (HTTP 400: ValueError: Dynamo's SGLang backend does not currently support logprobs >= 1 due to an O(N) per-position detokenization…) 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. Dashed lines mark published changes, labeled with the level shift across them: for LT the mean drift over the 7 days after minus the 7 days before; for B3IT the total-variation shift its detector measured.

Hover a day on either lane, a change mark or an epoch line to read the data behind it.

Detected changes #

| Date | Method | Level shift |

|---|---|---|

Spend #

what OpenRouter billed for tracking this endpoint. Spend recorded since 2026-09-17 Total to date

$0.16

Last 30 days

$0.11

Queries

70,354

- B3IT (onboarding)$0.1490%
- B3IT (monitoring)$0.01610%
  • Vetting$0.000076<1%

Vetting is the one-off probe that checks the endpoint's billed cost against its advertised price.

**B3IT (onboarding)** is the initial border-input search;

**B3IT (monitoring)** and

LT are the recurring daily checks.

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