chore: Test and use node 26

.github/workflows/checks.yaml

@@ -88,7 +88,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-2025-vs2026]
-        node-version: [20, 22, 24]
+        node-version: [20, 22, 24, 26]
     env:
       ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: ${{ matrix.node-version == 20 && 'true' || '' }}
     steps:
@@ -364,7 +364,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [20, 22, 24]
+        node-version: [20, 22, 24, 26]
     env:
       ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: ${{ matrix.node-version == 20 && 'true' || '' }}
     steps:
@@ -392,7 +392,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [20, 22, 24]
+        node-version: [20, 22, 24, 26]
     env:
       ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: ${{ matrix.node-version == 20 && 'true' || '' }}
     steps:
@@ -420,7 +420,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [20, 22, 24]
+        node-version: [20, 22, 24, 26]
         test-dir: [otel-v1, otel-v2]
     env:
       ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: ${{ matrix.node-version == 20 && 'true' || '' }}

.tool-versions

@@ -1,4 +1,4 @@
-nodejs 24.15.0
+nodejs 26.8.2
 npm 11.12.1
 pnpm 10.33.0
 deno 2.7.6

e2e/scenarios/mistral-instrumentation/__snapshots__/mistral-v1.span-tree.txt

@@ -61,7 +61,7 @@ span_tree:
     │       ]
     │       output: [
     │         {
-    │           "finishReason": null,
+    │           "finishReason": "stop",
     │           "index": 0,
     │           "message": {
     │             "content": "streamed output",
@@ -80,7 +80,10 @@ span_tree:
     │         "temperature": 0
     │       }
     │       metrics: {
-    │         "time_to_first_token": 0
+    │         "completion_tokens": 4,
+    │         "prompt_tokens": 22,
+    │         "time_to_first_token": 0,
+    │         "tokens": 26
     │       }
     ├── mistral-chat-reasoning-stream-operation
     │   metadata: {
@@ -96,10 +99,10 @@ span_tree:
     │       ]
     │       output: [
     │         {
-    │           "finishReason": null,
+    │           "finishReason": "stop",
     │           "index": 0,
     │           "message": {
-    │             "content": "Let's break down the problem step by step to find John's age.\n\n1. **First Sister's Age:**\n   - Given: The first sister is **4 years old**.\n\n2. **Second Sister's Age Next Year:**\n   - Next year, the second sister will be twice as old as the first sister.\n   - First sister's age next year: \\(4 + 1 = 5\\) years.\n   - Therefore, second sister's age next year: \\(2 \\times 5 = 10\\) years.\n   - **Current age of the second sister:** \\(10 - 1 = 9\\) years.\n\n3. **Third Sister's Age:**\n   - The third sister is two years older than the second sister.\n   - **Current age of the third sister:** \\(9 + 2 = 11\\) years.\n\n4. **John's Age:**\n   - The third sister is half the age of her older brother (John).\n   - Therefore, John's age: \\(11 \\times 2 = 22\\) years.\n\n**Final Answer:**\n\\[\n\\box",
+    │             "content": "Let's break down the problem step by step to find John's age.\n\n1. **First Sister's Age:**\n   - Given: The first sister is **4 years old**.\n\n2. **Second Sister's Age Next Year:**\n   - Next year, the second sister will be twice as old as the first sister.\n   - First sister's age next year: \\(4 + 1 = 5\\) years.\n   - Therefore, second sister's age next year: \\(2 \\times 5 = 10\\) years.\n   - **Current age of the second sister:** \\(10 - 1 = 9\\) years.\n\n3. **Third Sister's Age:**\n   - The third sister is two years older than the second sister.\n   - **Current age of the third sister:** \\(9 + 2 = 11\\) years.\n\n4. **John's Age:**\n   - The third sister is half the age of her older brother (John).\n   - Therefore, John's age: \\(11 \\times 2 = 22\\) years.\n\n**Final Answer:**\n\\[\n\\boxed{22}\n\\]",
     │             "role": "assistant"
     │           }
     │         }
@@ -116,7 +119,10 @@ span_tree:
     │         "temperature": 0
     │       }
     │       metrics: {
-    │         "time_to_first_token": 0
+    │         "completion_tokens": 234,
+    │         "prompt_tokens": 83,
+    │         "time_to_first_token": 0,
+    │         "tokens": 317
     │       }
     ├── mistral-chat-tool-call-operation
     │   metadata: {

e2e/scenarios/openai-instrumentation/__snapshots__/openai-v5-auto-hook.span-tree.txt

@@ -1211,91 +1211,13 @@ span_tree:
 │   │   }
 │   │   └── openai.responses.create [llm]
 │   │       input: "Reply with exactly PARTIAL."
-│   │       output: [
-│   │         {
-│   │           "content": [
-│   │             {
-│   │               "annotations": [],
-│   │               "logprobs": [],
-│   │               "text": "PARTIAL",
-│   │               "type": "output_text"
-│   │             }
-│   │           ],
-│   │           "id": "<span:1>",
-│   │           "role": "assistant",
-│   │           "status": "completed",
-│   │           "type": "message"
-│   │         }
-│   │       ]
 │   │       metadata: {
-│   │         "background": false,
-│   │         "completed_at": 0,
-│   │         "created_at": 0,
-│   │         "error": null,
-│   │         "frequency_penalty": 0,
-│   │         "id": "<span:1>",
-│   │         "incomplete_details": null,
-│   │         "instructions": null,
 │   │         "max_output_tokens": 24,
-│   │         "max_tool_calls": null,
-│   │         "metadata": {},
 │   │         "model": "gpt-4o-mini-2024-07-18",
-│   │         "moderation": null,
-│   │         "object": "response",
-│   │         "parallel_tool_calls": true,
-│   │         "presence_penalty": 0,
-│   │         "previous_response_id": null,
-│   │         "prompt_cache_retention": "in_memory",
-│   │         "provider": "openai",
-│   │         "reasoning": {
-│   │           "context": null,
-│   │           "effort": null,
-│   │           "summary": null
-│   │         },
-│   │         "safety_identifier": null,
-│   │         "service_tier": "default",
-│   │         "status": "completed",
-│   │         "store": true,
-│   │         "temperature": 1,
-│   │         "text": {
-│   │           "format": {
-│   │             "type": "text"
-│   │           },
-│   │           "verbosity": "medium"
-│   │         },
-│   │         "tool_choice": "auto",
-│   │         "tool_usage": {
-│   │           "image_gen": {
-│   │             "input_tokens": 0,
-│   │             "input_tokens_details": {
-│   │               "image_tokens": 0,
-│   │               "text_tokens": 0
-│   │             },
-│   │             "output_tokens": 0,
-│   │             "output_tokens_details": {
-│   │               "image_tokens": 0,
-│   │               "text_tokens": 0
-│   │             },
-│   │             "total_tokens": 0
-│   │           },
-│   │           "web_search": {
-│   │             "num_requests": 0
-│   │           }
-│   │         },
-│   │         "tools": [],
-│   │         "top_logprobs": 0,
-│   │         "top_p": 1,
-│   │         "truncation": "disabled",
-│   │         "user": null
+│   │         "provider": "openai"
 │   │       }
 │   │       metrics: {
-│   │         "completion_reasoning_tokens": 0,
-│   │         "completion_tokens": 3,
-│   │         "prompt_cache_write_tokens": 0,
-│   │         "prompt_cached_tokens": 0,
-│   │         "prompt_tokens": 13,
-│   │         "time_to_first_token": 0,
-│   │         "tokens": 16
+│   │         "time_to_first_token": 0
 │   │       }
 │   └── openai-responses-parse-operation
 │       metadata: {