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Merge pull request #103 from ChrAlpha/feat/add-gpt-5.2-codex-copilot

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feat(openai): responses API support for GitHub Copilot provider
This commit is contained in:
Luis Pater
2026-01-16 18:33:53 +08:00
committed by GitHub
parent ccb2aaf2fe 18daa023cb
commit 25e9be3ced
7 changed files with 494 additions and 10 deletions
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60
internal/registry/model_definitions.go
View File

@@ -847,6 +847,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "OpenAI GPT-5 via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 32768,
SupportedEndpoints: []string{"/chat/completions", "/responses"},
},
{
ID: "gpt-5-mini",
@@ -858,6 +859,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "OpenAI GPT-5 Mini via GitHub Copilot",
ContextLength: 128000,
MaxCompletionTokens: 16384,
SupportedEndpoints: []string{"/chat/completions", "/responses"},
},
{
ID: "gpt-5-codex",
@@ -869,6 +871,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "OpenAI GPT-5 Codex via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 32768,
SupportedEndpoints: []string{"/responses"},
},
{
ID: "gpt-5.1",
@@ -880,6 +883,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "OpenAI GPT-5.1 via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 32768,
SupportedEndpoints: []string{"/chat/completions", "/responses"},
},
{
ID: "gpt-5.1-codex",
@@ -891,6 +895,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "OpenAI GPT-5.1 Codex via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 32768,
SupportedEndpoints: []string{"/responses"},
},
{
ID: "gpt-5.1-codex-mini",
@@ -902,6 +907,19 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "OpenAI GPT-5.1 Codex Mini via GitHub Copilot",
ContextLength: 128000,
MaxCompletionTokens: 16384,
SupportedEndpoints: []string{"/responses"},
},
{
ID: "gpt-5.1-codex-max",
Object: "model",
Created: now,
OwnedBy: "github-copilot",
Type: "github-copilot",
DisplayName: "GPT-5.1 Codex Max",
Description: "OpenAI GPT-5.1 Codex Max via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 32768,
SupportedEndpoints: []string{"/responses"},
},
{
ID: "gpt-5.2",
@@ -913,6 +931,19 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "OpenAI GPT-5.2 via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 32768,
SupportedEndpoints: []string{"/chat/completions", "/responses"},
},
{
ID: "gpt-5.2-codex",
Object: "model",
Created: now,
OwnedBy: "github-copilot",
Type: "github-copilot",
DisplayName: "GPT-5.2 Codex",
Description: "OpenAI GPT-5.2 Codex via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 32768,
SupportedEndpoints: []string{"/responses"},
},
{
ID: "claude-haiku-4.5",
@@ -924,6 +955,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "Anthropic Claude Haiku 4.5 via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 64000,
SupportedEndpoints: []string{"/chat/completions"},
},
{
ID: "claude-opus-4.1",
@@ -935,6 +967,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "Anthropic Claude Opus 4.1 via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 32000,
SupportedEndpoints: []string{"/chat/completions"},
},
{
ID: "claude-opus-4.5",
@@ -946,6 +979,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "Anthropic Claude Opus 4.5 via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 64000,
SupportedEndpoints: []string{"/chat/completions"},
},
{
ID: "claude-sonnet-4",
@@ -957,6 +991,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "Anthropic Claude Sonnet 4 via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 64000,
SupportedEndpoints: []string{"/chat/completions"},
},
{
ID: "claude-sonnet-4.5",
@@ -968,6 +1003,7 @@ func GetGitHubCopilotModels() []*ModelInfo {
Description: "Anthropic Claude Sonnet 4.5 via GitHub Copilot",
ContextLength: 200000,
MaxCompletionTokens: 64000,
SupportedEndpoints: []string{"/chat/completions"},
},
{
ID: "gemini-2.5-pro",
@@ -981,13 +1017,24 @@ func GetGitHubCopilotModels() []*ModelInfo {
MaxCompletionTokens: 65536,
},
{
ID: "gemini-3-pro",
ID: "gemini-3-pro-preview",
Object: "model",
Created: now,
OwnedBy: "github-copilot",
Type: "github-copilot",
DisplayName: "Gemini 3 Pro",
Description: "Google Gemini 3 Pro via GitHub Copilot",
DisplayName: "Gemini 3 Pro (Preview)",
Description: "Google Gemini 3 Pro Preview via GitHub Copilot",
ContextLength: 1048576,
MaxCompletionTokens: 65536,
},
{
ID: "gemini-3-flash-preview",
Object: "model",
Created: now,
OwnedBy: "github-copilot",
Type: "github-copilot",
DisplayName: "Gemini 3 Flash (Preview)",
Description: "Google Gemini 3 Flash Preview via GitHub Copilot",
ContextLength: 1048576,
MaxCompletionTokens: 65536,
},
@@ -1003,15 +1050,16 @@ func GetGitHubCopilotModels() []*ModelInfo {
MaxCompletionTokens: 16384,
},
{
ID: "raptor-mini",
ID: "oswe-vscode-prime",
Object: "model",
Created: now,
OwnedBy: "github-copilot",
Type: "github-copilot",
DisplayName: "Raptor Mini",
Description: "Raptor Mini via GitHub Copilot",
DisplayName: "Raptor mini (Preview)",
Description: "Raptor mini via GitHub Copilot",
ContextLength: 128000,
MaxCompletionTokens: 16384,
SupportedEndpoints: []string{"/chat/completions", "/responses"},
},
}
}

8
internal/registry/model_registry.go
View File

@@ -47,6 +47,8 @@ type ModelInfo struct {
MaxCompletionTokens int `json:"max_completion_tokens,omitempty"`
// SupportedParameters lists supported parameters
SupportedParameters []string `json:"supported_parameters,omitempty"`
// SupportedEndpoints lists supported API endpoints (e.g., "/chat/completions", "/responses").
SupportedEndpoints []string `json:"supported_endpoints,omitempty"`
// Thinking holds provider-specific reasoning/thinking budget capabilities.
// This is optional and currently used for Gemini thinking budget normalization.
@@ -476,6 +478,9 @@ func cloneModelInfo(model *ModelInfo) *ModelInfo {
if len(model.SupportedParameters) > 0 {
copyModel.SupportedParameters = append([]string(nil), model.SupportedParameters...)
}
if len(model.SupportedEndpoints) > 0 {
copyModel.SupportedEndpoints = append([]string(nil), model.SupportedEndpoints...)
}
return &copyModel
}
@@ -988,6 +993,9 @@ func (r *ModelRegistry) convertModelToMap(model *ModelInfo, handlerType string)
if len(model.SupportedParameters) > 0 {
result["supported_parameters"] = model.SupportedParameters
}
if len(model.SupportedEndpoints) > 0 {
result["supported_endpoints"] = model.SupportedEndpoints
}
return result
case "claude", "kiro", "antigravity":

36
internal/runtime/executor/github_copilot_executor.go
View File

@@ -23,6 +23,7 @@ import (
const (
githubCopilotBaseURL = "https://api.githubcopilot.com"
githubCopilotChatPath = "/chat/completions"
githubCopilotResponsesPath = "/responses"
githubCopilotAuthType = "github-copilot"
githubCopilotTokenCacheTTL = 25 * time.Minute
// tokenExpiryBuffer is the time before expiry when we should refresh the token.
@@ -106,7 +107,11 @@ func (e *GitHubCopilotExecutor) Execute(ctx context.Context, auth *cliproxyauth.
defer reporter.trackFailure(ctx, &err)
from := opts.SourceFormat
useResponses := useGitHubCopilotResponsesEndpoint(from)
to := sdktranslator.FromString("openai")
if useResponses {
to = sdktranslator.FromString("openai-response")
}
originalPayload := bytes.Clone(req.Payload)
if len(opts.OriginalRequest) > 0 {
originalPayload = bytes.Clone(opts.OriginalRequest)
@@ -117,7 +122,11 @@ func (e *GitHubCopilotExecutor) Execute(ctx context.Context, auth *cliproxyauth.
body = applyPayloadConfigWithRoot(e.cfg, req.Model, to.String(), "", body, originalTranslated)
body, _ = sjson.SetBytes(body, "stream", false)
url := githubCopilotBaseURL + githubCopilotChatPath
path := githubCopilotChatPath
if useResponses {
path = githubCopilotResponsesPath
}
url := githubCopilotBaseURL + path
httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(body))
if err != nil {
return resp, err
@@ -172,6 +181,9 @@ func (e *GitHubCopilotExecutor) Execute(ctx context.Context, auth *cliproxyauth.
appendAPIResponseChunk(ctx, e.cfg, data)
detail := parseOpenAIUsage(data)
if useResponses && detail.TotalTokens == 0 {
detail = parseOpenAIResponsesUsage(data)
}
if detail.TotalTokens > 0 {
reporter.publish(ctx, detail)
}
@@ -194,7 +206,11 @@ func (e *GitHubCopilotExecutor) ExecuteStream(ctx context.Context, auth *cliprox
defer reporter.trackFailure(ctx, &err)
from := opts.SourceFormat
useResponses := useGitHubCopilotResponsesEndpoint(from)
to := sdktranslator.FromString("openai")
if useResponses {
to = sdktranslator.FromString("openai-response")
}
originalPayload := bytes.Clone(req.Payload)
if len(opts.OriginalRequest) > 0 {
originalPayload = bytes.Clone(opts.OriginalRequest)
@@ -205,9 +221,15 @@ func (e *GitHubCopilotExecutor) ExecuteStream(ctx context.Context, auth *cliprox
body = applyPayloadConfigWithRoot(e.cfg, req.Model, to.String(), "", body, originalTranslated)
body, _ = sjson.SetBytes(body, "stream", true)
// Enable stream options for usage stats in stream
body, _ = sjson.SetBytes(body, "stream_options.include_usage", true)
if !useResponses {
body, _ = sjson.SetBytes(body, "stream_options.include_usage", true)
}
url := githubCopilotBaseURL + githubCopilotChatPath
path := githubCopilotChatPath
if useResponses {
path = githubCopilotResponsesPath
}
url := githubCopilotBaseURL + path
httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(body))
if err != nil {
return nil, err
@@ -283,6 +305,10 @@ func (e *GitHubCopilotExecutor) ExecuteStream(ctx context.Context, auth *cliprox
}
if detail, ok := parseOpenAIStreamUsage(line); ok {
reporter.publish(ctx, detail)
} else if useResponses {
if detail, ok := parseOpenAIResponsesStreamUsage(line); ok {
reporter.publish(ctx, detail)
}
}
}
@@ -393,6 +419,10 @@ func (e *GitHubCopilotExecutor) normalizeModel(_ string, body []byte) []byte {
return body
}
func useGitHubCopilotResponsesEndpoint(sourceFormat sdktranslator.Format) bool {
return sourceFormat.String() == "openai-response"
}
// isHTTPSuccess checks if the status code indicates success (2xx).
func isHTTPSuccess(statusCode int) bool {
return statusCode >= 200 && statusCode < 300

38
internal/runtime/executor/usage_helpers.go
View File

@@ -236,6 +236,44 @@ func parseOpenAIStreamUsage(line []byte) (usage.Detail, bool) {
return detail, true
}
func parseOpenAIResponsesUsageDetail(usageNode gjson.Result) usage.Detail {
detail := usage.Detail{
InputTokens: usageNode.Get("input_tokens").Int(),
OutputTokens: usageNode.Get("output_tokens").Int(),
TotalTokens: usageNode.Get("total_tokens").Int(),
}
if detail.TotalTokens == 0 {
detail.TotalTokens = detail.InputTokens + detail.OutputTokens
}
if cached := usageNode.Get("input_tokens_details.cached_tokens"); cached.Exists() {
detail.CachedTokens = cached.Int()
}
if reasoning := usageNode.Get("output_tokens_details.reasoning_tokens"); reasoning.Exists() {
detail.ReasoningTokens = reasoning.Int()
}
return detail
}
func parseOpenAIResponsesUsage(data []byte) usage.Detail {
usageNode := gjson.ParseBytes(data).Get("usage")
if !usageNode.Exists() {
return usage.Detail{}
}
return parseOpenAIResponsesUsageDetail(usageNode)
}
func parseOpenAIResponsesStreamUsage(line []byte) (usage.Detail, bool) {
payload := jsonPayload(line)
if len(payload) == 0 || !gjson.ValidBytes(payload) {
return usage.Detail{}, false
}
usageNode := gjson.GetBytes(payload, "usage")
if !usageNode.Exists() {
return usage.Detail{}, false
}
return parseOpenAIResponsesUsageDetail(usageNode), true
}
func parseClaudeUsage(data []byte) usage.Detail {
usageNode := gjson.ParseBytes(data).Get("usage")
if !usageNode.Exists() {