Oc-go-cc, an Open-source proxy that lets Claude Code use OSS models

v0.3.0 Breaking

This release includes 2 breaking changes for platform teams planning a safe upgrade.

Published 1mo API Development

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Topics

aws-bedrock claude claude-code claude-code-cli opencode opencode-ai

+2 more

opencode-go opencode-zen

Affected surfaces

breaking_upgrade

ReleasePort's take

Light signal

editorial:auto 1mo

`model_overrides` now mandates explicit model names for DeepSeek V4 Pro and Flash Free variants; the shorthand syntax has been removed. Additionally, Anthropic routing prioritizes Zen‑specific endpoints when `IsZen` is true, potentially requiring config updates via `model_overrides`.

Why it matters: Breaking changes (severity 70) require updating configuration schema before upgrading to v0.3.0; failure may cause model resolution errors.

Summary

AI summary

Updates Bug Fixes, New Features, and Chores across a mixed release.

Changes in this release

Type	Severity	Summary	CVE
Breaking	High	`model_overrides` now requires explicit model names for DeepSeek V4 Pro and Flash Free variants; shorthand syntax removed. `model_overrides` now requires explicit model names for DeepSeek V4 Pro and Flash Free variants; shorthand syntax removed. Source: llm_adapter@2026-06-10 Confidence: high	—
Breaking	High	Anthropic model routing now prioritizes Zen-specific endpoints over legacy Anthropic when `IsZen` is true; existing configs may need updates using `model_overrides`. Anthropic model routing now prioritizes Zen-specific endpoints over legacy Anthropic when `IsZen` is true; existing configs may need updates using `model_overrides`. Source: llm_adapter@2026-06-10 Confidence: high	—
Feature
Feature	Medium	Add full Zen model support including Claude, GPT, Gemini, and free‑tier models. Add full Zen model support including Claude, GPT, Gemini, and free‑tier models. Source: llm_adapter@2026-06-10 Confidence: high	—
Feature	Medium	Add Claude model overrides for sonnet‑4.6, opus‑4.7, and haiku‑4.5. Add Claude model overrides for sonnet‑4.6, opus‑4.7, and haiku‑4.5. Source: llm_adapter@2026-06-10 Confidence: high	—
Feature	Medium	Add DeepSeek V4 Pro Zen override to config example and default config. Add DeepSeek V4 Pro Zen override to config example and default config. Source: llm_adapter@2026-06-10 Confidence: high	—
Feature	Medium	Add 49 Zen models grouped by endpoint type in `models` command output. Add 49 Zen models grouped by endpoint type in `models` command output. Source: llm_adapter@2026-06-10 Confidence: high	—
Feature	Medium	Add MiniMax M3 and Qwen3.7 profiles to model configuration. Add MiniMax M3 and Qwen3.7 profiles to model configuration. Source: llm_adapter@2026-06-10 Confidence: high	—
Feature	Medium	Add grok‑build‑0.1, big‑pickle, and north‑mini‑code‑free models to config listing. Add grok‑build‑0.1, big‑pickle, and north‑mini‑code‑free models to config listing. Source: llm_adapter@2026-06-10 Confidence: high	—
Bugfix	Medium	Fix endpoint classification to use Zen‑specific routing (MiniMax uses chat completions on Zen). Fix endpoint classification to use Zen‑specific routing (MiniMax uses chat completions on Zen). Source: llm_adapter@2026-06-10 Confidence: high	—
Bugfix	Medium	Fix streaming/non‑streaming path checks to prioritize Zen over Anthropic routing. Fix streaming/non‑streaming path checks to prioritize Zen over Anthropic routing. Source: llm_adapter@2026-06-10 Confidence: high	—

Full changelog

Changelog

Breaking Changes

Breaking Change: The model_overrides configuration now requires explicit model names for DeepSeek V4 Pro and Flash Free variants. Previous shorthand syntaxes are no longer supported.
Breaking Change: Anthropic model routing now prioritizes Zen-specific endpoints over legacy Anthropic routing when IsZen is true. Existing Anthropic configurations may require updates to use model_overrides for compatibility.

New Features

Add full Zen model support including Claude, GPT, Gemini, and free-tier models
Add Claude model overrides for sonnet-4.6, opus-4.7, and haiku-4.5
Add DeepSeek V4 Pro Zen override to config example and default config
Add 49 Zen models grouped by endpoint type in models command output
Add MiniMax M3 and Qwen3.7 profiles to model configuration
Add grok-build-0.1, big-pickle, and north-mini-code-free models to config listing
Add test coverage for Claude, Grok, Big-Pickle, North Mini-Code-Free, and missing Go models

Bug Fixes

Fix endpoint classification to use Zen-specific routing (minimax uses chat completions on Zen)
Fix streaming/non-streaming path checks to prioritize Zen over Anthropic routing
Fix deprecated model names in documentation

Improvements

Improve model documentation with updated endpoint tables and configuration examples
Enhance configuration examples with DeepSeek V4 Pro/Flash Free override patterns
Improve models command description in README
Refactor endpoint classification logic for better Zen support

Documentation

Update MODELS.md with comprehensive Zen model documentation
Add model_overrides examples for DeepSeek V4 Pro and Flash Free variants
Update README.md with improved models command documentation

Chores

Refactor endpoint classification logic in internal/client/opencode.go
Update test coverage in internal/client/opencode_test.go
Refactor message handling in internal/handlers/messages.go
Update build configuration and dependency management

Breaking Changes

The `model_overrides` configuration now requires explicit model names for DeepSeek V4 Pro and Flash Free variants; previous shorthand syntaxes are no longer supported.
Anthropic model routing now prioritizes Zen-specific endpoints over legacy Anthropic routing when `IsZen` is true; existing configurations may need updates using `model_overrides`.

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Related context

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Earlier breaking changes

v0.6.0 Configuration format updated; migration required for compatibility.
v0.5.2 Catalog storage migrates from JSON files to SQLite by default.
v0.2.9 Removes models mimo-v2-pro, mimo-v2-omni, qwen3.5-plus from routing
v0.2.8 Breaks existing API key management workflows requiring round-robin configuration
v0.2.7 Modifies environment-specific logic to accommodate new validation rules.