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feat: switch AI provider from Groq to OpenAI

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Replace Groq/Llama with OpenAI API:
- Text model: gpt-4o-mini
- Vision model: gpt-4o
- Rename GEMINI_API_KEY → OPENAI_API_KEY env var
- Rename callGroq → callOpenAI, update all related constants and comments

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
dbastrikin
2026-02-22 13:57:55 +02:00
parent 842bca9641
commit 1973f45b0a
6 changed files with 20 additions and 20 deletions
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30
backend/internal/gemini/client.go
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@@ -11,19 +11,19 @@ import (
)
const (
// groqAPIURL is the Groq OpenAI-compatible endpoint (free tier, no billing required).
groqAPIURL = "https://api.groq.com/openai/v1/chat/completions"
// openaiAPIURL is the OpenAI chat completions endpoint.
openaiAPIURL = "https://api.openai.com/v1/chat/completions"
// groqModel is the default text generation model.
groqModel = "llama-3.3-70b-versatile"
// openaiModel is the default text generation model.
openaiModel = "gpt-4o-mini"
// groqVisionModel supports image inputs in OpenAI vision format.
groqVisionModel = "meta-llama/llama-4-scout-17b-16e-instruct"
// openaiVisionModel supports image inputs.
openaiVisionModel = "gpt-4o"
maxRetries = 3
)
// Client is an HTTP client for the Groq LLM API (OpenAI-compatible).
// Client is an HTTP client for the OpenAI API.
type Client struct {
apiKey string
httpClient *http.Client
@@ -39,9 +39,9 @@ func NewClient(apiKey string) *Client {
}
}
// generateContent sends text messages to the text-only model.
// generateContent sends text messages to the text model.
func (c *Client) generateContent(ctx context.Context, messages []map[string]string) (string, error) {
return c.callGroq(ctx, groqModel, 0.7, messages)
return c.callOpenAI(ctx, openaiModel, 0.7, messages)
}
// generateVisionContent sends an image + text prompt to the vision model.
@@ -68,12 +68,12 @@ func (c *Client) generateVisionContent(ctx context.Context, prompt, imageBase64,
},
},
}
return c.callGroq(ctx, groqVisionModel, 0.1, messages)
return c.callOpenAI(ctx, openaiVisionModel, 0.1, messages)
}
// callGroq is the shared HTTP transport for all Groq requests.
// callOpenAI is the shared HTTP transport for all OpenAI requests.
// messages can be []map[string]string (text) or []any (vision with image content).
func (c *Client) callGroq(ctx context.Context, model string, temperature float64, messages any) (string, error) {
func (c *Client) callOpenAI(ctx context.Context, model string, temperature float64, messages any) (string, error) {
body := map[string]any{
"model": model,
"temperature": temperature,
@@ -85,7 +85,7 @@ func (c *Client) callGroq(ctx context.Context, model string, temperature float64
return "", fmt.Errorf("marshal request: %w", err)
}
req, err := http.NewRequestWithContext(ctx, http.MethodPost, groqAPIURL, bytes.NewReader(bodyBytes))
req, err := http.NewRequestWithContext(ctx, http.MethodPost, openaiAPIURL, bytes.NewReader(bodyBytes))
if err != nil {
return "", fmt.Errorf("create request: %w", err)
}
@@ -100,7 +100,7 @@ func (c *Client) callGroq(ctx context.Context, model string, temperature float64
if resp.StatusCode != http.StatusOK {
raw, _ := io.ReadAll(resp.Body)
return "", fmt.Errorf("groq API error %d: %s", resp.StatusCode, string(raw))
return "", fmt.Errorf("openai API error %d: %s", resp.StatusCode, string(raw))
}
var result struct {
@@ -114,7 +114,7 @@ func (c *Client) callGroq(ctx context.Context, model string, temperature float64
return "", fmt.Errorf("decode response: %w", err)
}
if len(result.Choices) == 0 {
return "", fmt.Errorf("empty response from Groq")
return "", fmt.Errorf("empty response from OpenAI")
}
return result.Choices[0].Message.Content, nil
}