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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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One change · api

spans changedapi/opentelemetry/spans

Nearest release: v2.1.307, published 6 hours after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Recorded here
Lines+1added
Lines−1removed
From line 149 where the diff opens
First seen 14 Oct 2026 this site's first read of the page
Recorded edits5to this page, all time

The whole hunk

from line 149, old and new numbered
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from line 149
149149| `anthropic.request.service_tier` | `string` | The request's [`service_tier`](https://platform.claude.com/docs/en/api/messages/create#create.service_tier). Absent when the request doesn't set it. |
150150| `anthropic.thinking.type` | `string` | The request's [`thinking.type`](https://platform.claude.com/docs/en/api/messages/create#create.thinking). Absent when the request doesn't set it. |
151151| `anthropic.thinking.budget_tokens` | `int` | The [`budget_tokens`](https://platform.claude.com/docs/en/api/messages#thinking_config_enabled.budget_tokens) in the request's [`thinking`](https://platform.claude.com/docs/en/api/messages/create#create.thinking) object. Absent when the request doesn't set it. |
152| `anthropic.beta` | `string[]` | Only on the SDK span. The beta names in the request's [`anthropic-beta`](https://platform.claude.com/docs/en/api/beta/messages/create#create.betas) header. |
152| `anthropic.beta` | `string[]` | The beta names in the request's [`anthropic-beta`](https://platform.claude.com/docs/en/api/beta/messages/create#create.betas) header. |
153153| `gen_ai.system_instructions` | `string` | <Badge>Content</Badge> A JSON string that follows the OpenTelemetry [`SystemInstructions`](https://github.com/open-telemetry/semantic-conventions-genai/blob/e57c543b4889619eb2a05702471937db5119165d/model/gen-ai/gen-ai-system-instructions.json) schema. The request's [`system`](https://platform.claude.com/docs/en/api/messages/create#create.system) prompt. |
154154| `gen_ai.input.messages` | `string` | <Badge>Content</Badge> A JSON string that follows the OpenTelemetry [`InputMessages`](https://github.com/open-telemetry/semantic-conventions-genai/blob/e57c543b4889619eb2a05702471937db5119165d/model/gen-ai/gen-ai-input-messages.json) schema. The request's [`messages`](https://platform.claude.com/docs/en/api/messages/create#create.messages). |
155155| `gen_ai.output.messages` | `string` | <Badge>Content</Badge> A JSON string that follows the OpenTelemetry [`OutputMessages`](https://github.com/open-telemetry/semantic-conventions-genai/blob/e57c543b4889619eb2a05702471937db5119165d/model/gen-ai/gen-ai-output-messages.json) schema. The response's [`content`](https://platform.claude.com/docs/en/api/messages/create#message), as one `assistant` message.<br />**SDK:** On a stream, only when the application reads the stream as [Tracing a stream](https://platform.claude.com/docs/en/manage-claude/opentelemetry/sdk#trace-a-stream) describes. |
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