# anthropic/claude-opus-5 @ amazon-bedrock/us-east-1

- **TrackLLM** — machine-readable twin of [endpoints/anthropic2fclaude-opus-523amazon-bedrock2fus-east-1.html](https://www.trackllm.net/endpoints/anthropic2fclaude-opus-523amazon-bedrock2fus-east-1.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/anthropic2fclaude-opus-523amazon-bedrock2fus-east-1.xml](https://www.trackllm.net/feeds/endpoints/anthropic2fclaude-opus-523amazon-bedrock2fus-east-1.xml)
- **JSON** this page is rendered from: [data/models/anthropic2fclaude-opus-5.json](https://www.trackllm.net/data/models/anthropic2fclaude-opus-5.json) (model 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) / [anthropic](https://www.trackllm.net/orgs/anthropic.md) / [claude-opus-5](https://www.trackllm.net/models/anthropic2fclaude-opus-5.md) / @ amazon-bedrock/us-east-1

Model: [anthropic/claude-opus-5](https://www.trackllm.net/models/anthropic2fclaude-opus-5.md) · Served by: [Amazon Bedrock](https://www.trackllm.net/providers/amazon-bedrock.md) (us-east-1) · Organization: [anthropic](https://www.trackllm.net/orgs/anthropic.md) · Methods: none (untrackable)
amazon-bedrock serves 3 models (see the provider page).

## Tracking status

- **LT** — no logprobs: This endpoint does not return logprobs, so logprob tracking is impossible.
- **B3IT** — bad temperature: This API rejects or ignores the temperature parameter, so T=0 sampling is impossible — presumably to prevent distillation.

## Endpoint details

From the OpenRouter catalog snapshot.

| Field | Value |
| --- | --- |
| Pricing (per Mtok) | $5.50 in · $27.50 out |
| Listed since | 2026-07-24 |
| Claims temperature | no |
| Claims logprobs | no |


## 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)