cd /news/ai-infrastructure/anthropic-claude-sonnet-4-5-claude-o… · home › topics › ai-infrastructure › article
[ARTICLE · art-129413] src=trackllm.net ↗ pub= topic=ai-infrastructure verified=true sentiment=· neutral

anthropic/claude-sonnet-4.5 @ claude-on-aws: B3IT change (TV 0.21)

OpenRouter's tracking of the anthropic/claude-sonnet-4.5 endpoint on claude-on-aws recorded a B3IT total-variation level shift of 0.21, with no logprob tracking possible because the endpoint does not return logprobs. The endpoint is under active B3IT monitoring through its border inputs, and OpenRouter has billed $2.61 total since 2026-08-18 across 65,828 queries, including $2.40 for B3IT onboarding, $0.21 for B3IT monitoring, and $0.0011 for vetting.

read1 min views21 publishedSep 9, 2026

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. 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 2026-08-18 Total to date

$2.61

Last 30 days

$2.61

Queries

65,828

- B3IT (onboarding)$2.4092%
- B3IT (monitoring)$0.218%
  • Vetting$0.0011<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.

── more in #ai-infrastructure 4 stories · sorted by recency
── more on @anthropic 3 stories trending now
sponsored brought to you by zahid.host 4,200+ EU-deployed projects
reading about agents? ship yours in a single git push.

Run your AI side-project on zahid.host

EU-based hosting, git-push deploys, automatic HTTPS, no cold starts. Free tier with a custom domain — perfect for shipping the agent you just read about.

$git push zahid main
→ Live at https://your-agent.zahid.host ✓
Get free account → Pricing
from €0/mo · no card required
LIVE [news/anthropic-claude-son…] indexed:0 read:1min 2026-09-09 · —