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Sweep 28 Aug 2026 ยท 16:06Z Build v2.1.251 479 read Stable v2.1.236 Latest v2.1.251 Next v2.1.251 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

One change

structured-outputs

build-with-claude/structured-outputs

first seen The page's own history The capture it came from

Nearest release: v2.1.251, published 2 hours before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

build-with-claude/structured-outputs Changed · +4 / -4 lines

from line 1406
         -H "x-api-key: $ANTHROPIC_API_KEY" \
         -H "anthropic-version: 2023-06-01" \
         -d '{
-          "model": "claude-opus-4-8",
+          "model": "claude-opus-5",
           "max_tokens": 4096,
           "messages": [
             {
from line 1740
         -H "x-api-key: $ANTHROPIC_API_KEY" \
         -H "anthropic-version: 2023-06-01" \
         -d '{
-          "model": "claude-opus-4-8",
+          "model": "claude-opus-5",
           "max_tokens": 1024,
           "messages": [
             {
from line 2027
         -H "x-api-key: $ANTHROPIC_API_KEY" \
         -H "anthropic-version: 2023-06-01" \
         -d '{
-          "model": "claude-opus-4-8",
+          "model": "claude-opus-5",
           "max_tokens": 1024,
           "messages": [
             {
from line 2379
     -H "x-api-key: $ANTHROPIC_API_KEY" \
     -H "anthropic-version: 2023-06-01" \
     -d '{
-      "model": "claude-opus-4-8",
+      "model": "claude-opus-5",
       "max_tokens": 1024,
       "messages": [
         {