# Changelog

All notable changes to the TheSys Generative UI skill will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

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## [1.1.0] - 2025-10-26

### Updated
- **Model IDs to v-20250930** - Updated all model references to current stable versions
  - Claude Sonnet 4: `c1/anthropic/claude-sonnet-4/v-20250617` → `c1/anthropic/claude-sonnet-4/v-20250930`
  - GPT 5: `c1/openai/gpt-4` → `c1/openai/gpt-5/v-20250930`
- **Package versions** - Updated @crayonai/react-ui to 0.8.42 (from 0.8.27)
- **Template dependencies** - Updated all template package.json files with current versions
- **Reference documentation** - Completely revised `references/ai-provider-setup.md` with:
  - Current model IDs and pricing
  - Model selection guide
  - Python backend examples
  - Deprecation notices

### Added
- **Experimental models section** with `c1-exp/` prefix support
  - GPT 4.1: `c1-exp/openai/gpt-4.1/v-20250617`
  - Claude 3.5 Haiku: `c1-exp/anthropic/claude-3.5-haiku/v-20250709`
- **Pricing and specifications table** for all supported models
  - Input/output token costs
  - Context window sizes
  - Maximum output tokens
- **Python backend support** (major addition):
  - Complete Python integration section in SKILL.md
  - FastAPI template (`templates/python-backend/fastapi-chat.py`)
  - Flask template (`templates/python-backend/flask-chat.py`)
  - Python requirements.txt with all dependencies
  - Comprehensive Python backend README
- **New error documentation** (Error #13: Invalid Model ID Error)
  - Covers outdated model IDs
  - Lists current stable vs experimental models
  - Provides verification steps
- **Model version notes** section explaining version date format

### Removed
- **Non-existent model IDs**:
  - `c1/openai/gpt-5-mini` (never existed)
  - `c1/openai/gpt-5-nano` (never existed)
  - `c1/openai/gpt-4o` (not available via C1)
- **Outdated v-20250617 model versions** throughout documentation

### Fixed
- All model IDs now match official TheSys documentation (verified 2025-10-26)
- Version compatibility table updated with correct package versions
- Deprecated models (Claude 3.5 Sonnet, Claude 3.7 Sonnet) now explicitly noted

### Documentation
- Updated README.md with Python SDK package information
- Added model version checking notes
- Enhanced troubleshooting guide in `references/common-errors.md`
- Improved AI provider setup guide with pricing comparison

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## [1.0.0] - 2025-10-26

### Added
- Initial release of TheSys Generative UI skill
- Complete integration guide for Vite + React
- Next.js App Router templates
- Cloudflare Workers integration patterns
- 15+ working templates across frameworks
- Tool calling with Zod schemas
- Theming and customization guides
- Thread management patterns
- Streaming implementation examples
- Common errors and solutions (12 documented issues)
- Component API reference
- AI provider integration (OpenAI, Anthropic, Cloudflare Workers AI)

### Metadata
- Package: `@thesysai/genui-sdk@0.6.40`
- Token savings: ~65-70% vs manual implementation
- Errors prevented: 12+ documented issues
- Production tested: ✅ Yes
- Official standards compliant: ✅ Yes

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## Version History

- **1.1.0** (2025-10-26) - Model updates, Python support, pricing tables
- **1.0.0** (2025-10-26) - Initial release

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**Note**: For detailed implementation guides and examples, see [SKILL.md](SKILL.md).