feat(providers): add Claude Opus 5 model (#5925)

* feat(providers): add Claude Opus 5 model

* fix(providers): route Opus 5 through adaptive thinking

Opus 5 supports only adaptive thinking (no extended thinking / budget_tokens),
same as Opus 4.8/4.7. Add opus-5 to supportsAdaptiveThinking so thinking
requests use thinking.type: adaptive instead of falling through to budget_tokens
extended thinking, which Opus 4.7+ rejects with a 400.

* docs(agent): regenerate agent-stream docs for Opus 5

apps/docs/content/docs/en/workflows/blocks/agent.mdx

@@ -108,7 +108,7 @@ Live tool-call chips stream for **Anthropic, Azure Anthropic, Google, Vertex AI,
 |----------|-------------------|--------|
 | OpenAI | Summaries only — Requires OpenAI organization verification; falls back to no summaries. | `gpt-5.6-sol`, `gpt-5.6-terra`, `gpt-5.6-luna`, `gpt-5.5-pro`, `gpt-5.5`, `gpt-5.4-pro`, `gpt-5.4`, `gpt-5.4-mini`, `gpt-5.4-nano`, `gpt-5.2-pro`, `gpt-5.2`, `gpt-5.1`, `gpt-5-pro`, `gpt-5`, `gpt-5-mini`, `gpt-5-nano`, `o4-mini`, `o3`, `o3-mini`, `o1` |
 | Anthropic | Full thinking deltas | `claude-opus-4-6`, `claude-sonnet-4-6`, `claude-opus-4-5`, `claude-opus-4-1`, `claude-sonnet-4-5`, `claude-haiku-4-5` |
-| Anthropic | Summaries only — These generations omit full thinking; Sim requests summarized thinking on streaming runs. | `claude-fable-5`, `claude-sonnet-5`, `claude-opus-4-8`, `claude-opus-4-7` |
+| Anthropic | Summaries only — These generations omit full thinking; Sim requests summarized thinking on streaming runs. | `claude-fable-5`, `claude-sonnet-5`, `claude-opus-5`, `claude-opus-4-8`, `claude-opus-4-7` |
 | Azure OpenAI | Summaries only — Requires OpenAI organization verification; falls back to no summaries. | `azure/gpt-5.4`, `azure/gpt-5.4-mini`, `azure/gpt-5.4-nano`, `azure/gpt-5.2`, `azure/gpt-5.1`, `azure/gpt-5.1-codex`, `azure/gpt-5`, `azure/gpt-5-mini`, `azure/gpt-5-nano`, `azure/o3`, `azure/o4-mini` |
 | Azure Anthropic | Full thinking deltas | `azure-anthropic/claude-opus-4-6`, `azure-anthropic/claude-opus-4-5`, `azure-anthropic/claude-sonnet-4-5`, `azure-anthropic/claude-opus-4-1`, `azure-anthropic/claude-haiku-4-5` |
 | Google | Summaries only | `gemini-3.6-flash`, `gemini-3.5-flash-lite`, `gemini-3.5-flash`, `gemini-3.1-pro-preview`, `gemini-3.1-flash-lite`, `gemini-3-flash-preview`, `gemini-2.5-pro`, `gemini-2.5-flash`, `gemini-2.5-flash-lite` |

apps/sim/providers/anthropic/core.thinking.test.ts

@@ -14,6 +14,7 @@ describe('buildThinkingConfig', () => {
     for (const model of [
       'claude-fable-5',
       'claude-sonnet-5',
+      'claude-opus-5',
       'claude-opus-4-8',
       'claude-opus-4-7',
     ]) {
@@ -27,6 +28,7 @@ describe('buildThinkingConfig', () => {
     for (const model of [
       'claude-fable-5',
       'claude-sonnet-5',
+      'claude-opus-5',
       'claude-opus-4-8',
       'claude-opus-4-7',
     ]) {

apps/sim/providers/anthropic/core.ts

@@ -98,7 +98,7 @@ const ANTHROPIC_THINKING_OUTPUT_HEADROOM = 4096
  * Checks if a model supports adaptive thinking (thinking.type: "adaptive").
  * Fable 5 supports ONLY adaptive thinking (always on; type: "disabled" is rejected).
  * Sonnet 5 supports ONLY adaptive thinking (manual budget_tokens returns a 400 error).
- * Opus 4.8 and Opus 4.7 support ONLY adaptive thinking (no extended thinking / budget_tokens).
+ * Opus 5, Opus 4.8, and Opus 4.7 support ONLY adaptive thinking (no extended thinking / budget_tokens).
  * Opus 4.6 and Sonnet 4.6 support both extended and adaptive thinking — use adaptive.
  * Opus 4.5 supports effort but NOT adaptive thinking — it uses budget_tokens with type: "enabled".
  */
@@ -107,6 +107,7 @@ function supportsAdaptiveThinking(modelId: string): boolean {
   return (
     normalizedModel.includes('fable-5') ||
     normalizedModel.includes('sonnet-5') ||
+    normalizedModel.includes('opus-5') ||
     normalizedModel.includes('opus-4-8') ||
     normalizedModel.includes('opus-4.8') ||
     normalizedModel.includes('opus-4-7') ||
@@ -121,7 +122,7 @@ function supportsAdaptiveThinking(modelId: string): boolean {
 /**
  * Builds the thinking configuration for the Anthropic API based on model capabilities and level.
  *
- * - Fable 5, Sonnet 5, Opus 4.8, Opus 4.7: Uses adaptive thinking only (no extended thinking support)
+ * - Fable 5, Sonnet 5, Opus 5, Opus 4.8, Opus 4.7: Uses adaptive thinking only (no extended thinking support)
  * - Opus 4.6, Sonnet 4.6: Uses adaptive thinking with effort parameter
  * - Other models: Uses budget_tokens-based extended thinking
  *

apps/sim/providers/models.ts

@@ -797,6 +797,27 @@ export const PROVIDER_DEFINITIONS: Record<string, ProviderDefinition> = {
         releaseDate: '2026-06-30',
         recommended: true,
       },
+      {
+        id: 'claude-opus-5',
+        pricing: {
+          input: 5.0,
+          cachedInput: 0.5,
+          output: 25.0,
+          updatedAt: '2026-07-24',
+        },
+        capabilities: {
+          nativeStructuredOutputs: true,
+          maxOutputTokens: 128000,
+          thinking: {
+            levels: ['low', 'medium', 'high', 'xhigh', 'max'],
+            default: 'high',
+            streamed: 'summary',
+          },
+        },
+        contextWindow: 1000000,
+        releaseDate: '2026-07-24',
+        recommended: true,
+      },
       {
         id: 'claude-opus-4-8',
         pricing: {
@@ -816,7 +837,6 @@ export const PROVIDER_DEFINITIONS: Record<string, ProviderDefinition> = {
         },
         contextWindow: 1000000,
         releaseDate: '2026-05-28',
-        recommended: true,
       },
       {
         id: 'claude-opus-4-7',