v1.4.0

What's Changed

Breaking Changes

• Reworked Responses streaming iteration API (3efbd81)
  • Replaced stream.Chan() with stream.Seq() for (event, err) range loops
  • stream.All() now returns ([]any, error)
  • Stream error events are available through stream.Err() / StreamError
• Renamed model constants to follow model IDs more closely (97cfc68)
• Made tool registry locking internal instead of exposing the embedded mutex (97cfc68)

Features

• Added web search tool options (da1bb7f)
  • Added domain filters, return token budget, and external web access controls

Improvements

• Improved Responses SSE and WebSocket stream cleanup and error handling (3efbd81)
• Increased background polling timeouts for slower background responses (80177e0, 8a4c3c8)
• Fixed a data race when registering tools (97cfc68)

Models

• Added gpt-5.3-chat-latest, gpt-5.4, gpt-5.4-mini, gpt-5.4-nano, gpt-5.4-pro, gpt-5.5, gpt-5.5-pro, chat-latest, gpt-image-2, gpt-realtime-2
• Added duration-billed realtime model pricing data (633f7b0)
• Updated default model to GPT-5.5 and default image model to gpt-image-2
• Removed dropped series 4 and GPT-4o audio/realtime preview models (9542c4c, 71ca57b)

Full Changelog: v1.3.1...v1.4.0

v1.3.1

What's Changed

• Added support for server-side context compaction via responses.Request.ContextManagement (5bc451f)
  • New output.Compaction type for compaction items returned by the API

Full Changelog: v1.3.0...v1.3.1

v1.3.0

What's Changed

Features

• Added WebSocket support for Responses API streaming (7e65a5c)
  • client.Responses.WebSocket opens a persistent connection; WSConn.Send returns the same StreamIterator as SSE-based Stream
  • Includes Warmup for pre-heating request state without generating output
• Added support for tool CallLimit option in Responses API (95a8362)

Fixes

• Fixed unmarshaling error due to overlap between fields of computer use and shell tools (96f39d1)

Models

• Added gpt-5.3-codex, gpt-realtime-1.5, gpt-audio-1.5
• Removed gpt-4o-latest, codex-mini-latest after they were dropped from the API

Full Changelog: v1.2.1...v1.3.0

v1.2.1

What's Changed

New

• Added gpt-5.2-codex model (f1cfb3a)
  • New constant GPT52Codex for the model
  • Added pricing data matching official pricing page

Full Changelog: v1.2.0...v1.2.1

v1.2.0

What's Changed

Features

• Added support for GPT-5.2 model series (8e5c988)
  • New models: gpt-5.2, gpt-5.2-pro, gpt-5.2-chat-latest
  • Updated default model to GPT-5.2
• Added support for persistent conversations (8ae6b0f)
  • New conversation management API for multi-turn interactions
  • Added example for conversation usage

Improvements

• Updated models and pricing to match the API (551604c)
  • Added new image models: chatgpt-image-latest, gpt-image-1.5
  • Added new TTS models: gpt-4o-mini-tts-2025-03-20, gpt-4o-mini-tts-2025-12-15
  • Added new text models: gpt-4o-mini-transcribe-2025-03-20, gpt-4o-mini-transcribe-2025-12-15, gpt-realtime-mini-2025-12-15, gpt-audio-mini-2025-12-15
  • Updated pricing for new models based on official pricing page
• Updated list of models (cf620b4)

Chores

• Deleted unused test file (203c713)
• Excluded .github directory from gitignore (d0bfe79)

Full Changelog: v1.1.0...v1.2.0

v1.1.0

What's Changed

Features

• Added support for GPT 5.1 models
• Added support for new tools (8aeaef1)
  • New apply_patch tool with examples and helpers
  • New shell tool with examples and helpers
  • Added cache retention parameter prompt_cache_retention
  • Added new effort level none
• GitHub Actions workflow to check model list regularly (fd53f5f)
• Added a test to track new/deleted models (9f3cf2f)

Improvements

• Optimized tests (f325f31)
  • Tests now run in parallel
  • Use lower reasoning for faster execution
  • Disabled deprecated Assistants test
• Updated models/reasoning in slow examples (2865c55)

Fixes

• Updated lists of models to match the API (32661d2)
  • Added separate lists for Video and TTS models
  • Removed mentions of deleted models from the codebase
  • Updated test for missing models with better output
• Fixed incorrect name handling when registering built-in tools (8aeaef1)
• Unnamed protective mutex in config (a828277)

Chores

• Removed dead safety code (a294445)
• Updated checkout action version (b5cc6fd)

Full Changelog: v1.0.2...v1.1.0

v1.0.2

What's Changed

• Updated response struct to parse instructions of varied types

Full Changelog: v1.0.1...v1.0.2

Add custom tools

What's Changed

• feat: add custom tools support by @unkn0wncode in #2
• fix: verbosity param moved to text.verbosity

Full Changelog: v1.0.0...v1.0.1

v1.0.0

Initial stable release