SAP AI provider missing thinking variants for Gemini 2.5 and Claude 4.6

[jerome-benoit]

Description

SAP AI provider (@jerome-benoit/sap-ai-provider-v2) has incomplete thinking/reasoning variant support:

1. Gemini 2.5 models incorrectly receive reasoningEffort instead of thinkingConfig
2. Claude 4.6 models are not detected via the transverse isAnthropicAdaptive variable, missing adaptive thinking support

This causes thinking variants to not work correctly for these model families via SAP AI Core.

Plugins

N/A

OpenCode version

Latest (dev branch)

Steps to reproduce

1. Configure SAP AI provider with Gemini 2.5 or Claude 4.6 model
2. Select a reasoning variant (high/max)
3. Gemini 2.5 receives reasoningEffort instead of thinkingConfig
4. Claude 4.6 does not receive adaptive thinking config

Screenshot and/or share link

N/A

Operating System

macOS

Terminal

iTerm2

[github-actions]

This issue doesn't fully meet our contributing guidelines.

What needs to be fixed:

• This issue does not use one of the required issue templates (Bug Report, Feature Request, or Question). Please resubmit using the appropriate template. If this is a bug report, use the Bug Report template and include steps to reproduce and system information. If this is a feature/fix request, use the Feature Request template and title it with [FEATURE]:.

Please edit this issue to address the above within 2 hours, or it will be automatically closed.

---

This issue might be a duplicate of existing issues. Please check:

• Gemini 3 models hang due to conflicting thinkingConfig in smallOptions() #6886: Gemini models and thinkingConfig conflicts — while a different root cause, it involves the same thinkingConfig parameter for Gemini models in OpenCode.

If you believe this was flagged incorrectly, please let a maintainer know.

[github-actions]

Thank you for updating the issue! It now meets our contributing guidelines and has been marked as compliant.