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fix(claude): ensure max_tokens exceeds thinking budget for thinking models

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Fixes an issue where Claude thinking models would return 400 errors when
the thinking.budget_tokens was greater than or equal to max_tokens.

Changes:
- Add MaxCompletionTokens: 128000 to all Claude thinking model definitions
- Add ensureMaxTokensForThinking() function in claude_executor.go that:
  - Checks if thinking is enabled with a budget_tokens value
  - Looks up the model's MaxCompletionTokens from the registry
  - Ensures max_tokens is set to at least the model's MaxCompletionTokens
  - Falls back to budget_tokens + 4000 buffer if registry lookup fails

This ensures Anthropic API constraint (max_tokens > thinking.budget_tokens)
is always satisfied when using extended thinking features.

Fixes: #339

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
nestharus
2025-11-26 22:31:05 -08:00
parent 39621a0340
commit e73cdf5cff
2 changed files with 83 additions and 35 deletions
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75
internal/registry/model_definitions.go
View File

@@ -24,49 +24,54 @@ func GetClaudeModels() []*ModelInfo {
DisplayName: "Claude 4.5 Sonnet",
},
{
ID: "claude-sonnet-4-5-thinking",
Object: "model",
Created: 1759104000, // 2025-09-29
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Sonnet Thinking",
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
ID: "claude-sonnet-4-5-thinking",
Object: "model",
Created: 1759104000, // 2025-09-29
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Sonnet Thinking",
MaxCompletionTokens: 128000,
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
},
{
ID: "claude-opus-4-5-thinking",
Object: "model",
Created: 1761955200, // 2025-11-01
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Opus Thinking",
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
ID: "claude-opus-4-5-thinking",
Object: "model",
Created: 1761955200, // 2025-11-01
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Opus Thinking",
MaxCompletionTokens: 128000,
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
},
{
ID: "claude-opus-4-5-thinking-low",
Object: "model",
Created: 1761955200, // 2025-11-01
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Opus Thinking Low",
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
ID: "claude-opus-4-5-thinking-low",
Object: "model",
Created: 1761955200, // 2025-11-01
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Opus Thinking Low",
MaxCompletionTokens: 128000,
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
},
{
ID: "claude-opus-4-5-thinking-medium",
Object: "model",
Created: 1761955200, // 2025-11-01
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Opus Thinking Medium",
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
ID: "claude-opus-4-5-thinking-medium",
Object: "model",
Created: 1761955200, // 2025-11-01
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Opus Thinking Medium",
MaxCompletionTokens: 128000,
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
},
{
ID: "claude-opus-4-5-thinking-high",
Object: "model",
Created: 1761955200, // 2025-11-01
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Opus Thinking High",
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
ID: "claude-opus-4-5-thinking-high",
Object: "model",
Created: 1761955200, // 2025-11-01
OwnedBy: "anthropic",
Type: "claude",
DisplayName: "Claude 4.5 Opus Thinking High",
MaxCompletionTokens: 128000,
Thinking: &ThinkingSupport{Min: 1024, Max: 100000, ZeroAllowed: false, DynamicAllowed: true},
},
{
ID: "claude-opus-4-5-20251101",