Together AI LLM Provider

The Together AI provider connects Beluga AI to Together’s inference platform, which hosts a wide selection of open-source models. Together exposes an OpenAI-compatible API, so this provider supports all standard features including streaming, tool calling, and structured output.

Choose Together AI when you want access to a broad catalog of open-source models (Llama, Mixtral, Qwen, and more) with “Turbo” variants optimized for speed. Together is a good choice for prototyping across different model architectures and for workloads where open-weight model access is important.

Installation

go get github.com/lookatitude/beluga-ai/llm/providers/together

Configuration

Field	Required	Default	Description
Model	No	"meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo"	Model ID
APIKey	Yes	—	Together API key
BaseURL	No	https://api.together.xyz/v1	Override API endpoint
Timeout	No	30s	Request timeout

Environment variables:

Variable	Maps to
TOGETHER_API_KEY	APIKey

Basic Usage

package main

import (
    "context"
    "fmt"
    "log"
    "os"

    "github.com/lookatitude/beluga-ai/config"
    "github.com/lookatitude/beluga-ai/llm"
    "github.com/lookatitude/beluga-ai/schema"
    _ "github.com/lookatitude/beluga-ai/llm/providers/together"
)

func main() {
    model, err := llm.New("together", config.ProviderConfig{
        Model:  "meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo",
        APIKey: os.Getenv("TOGETHER_API_KEY"),
    })
    if err != nil {
        log.Fatal(err)
    }

    msgs := []schema.Message{
        schema.NewSystemMessage("You are a helpful assistant."),
        schema.NewHumanMessage("What is the capital of France?"),
    }

    resp, err := model.Generate(context.Background(), msgs)
    if err != nil {
        log.Fatal(err)
    }

    fmt.Println(resp.Text())
}

Streaming

for chunk, err := range model.Stream(context.Background(), msgs) {
    if err != nil {
        log.Fatal(err)
    }
    fmt.Print(chunk.Delta)
}
fmt.Println()

Advanced Features

Tool Calling

modelWithTools := model.BindTools(tools)
resp, err := modelWithTools.Generate(ctx, msgs, llm.WithToolChoice(llm.ToolChoiceAuto))

Structured Output

resp, err := model.Generate(ctx, msgs,
    llm.WithResponseFormat(llm.ResponseFormat{Type: "json_object"}),
)

Generation Options

resp, err := model.Generate(ctx, msgs,
    llm.WithTemperature(0.7),
    llm.WithMaxTokens(2048),
    llm.WithTopP(0.9),
    llm.WithStopSequences("END"),
)

Error Handling

resp, err := model.Generate(ctx, msgs)
if err != nil {
    log.Fatal(err)
}

Direct Construction

import "github.com/lookatitude/beluga-ai/llm/providers/together"

model, err := together.New(config.ProviderConfig{
    Model:  "meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo",
    APIKey: os.Getenv("TOGETHER_API_KEY"),
})

Available Models

Model ID	Description
meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo	Llama 3.1 70B (Turbo)
meta-llama/Meta-Llama-3.1-8B-Instruct-Turbo	Llama 3.1 8B (Turbo)
mistralai/Mixtral-8x7B-Instruct-v0.1	Mixtral 8x7B
Qwen/Qwen2.5-72B-Instruct-Turbo	Qwen 2.5 72B

Refer to Together AI’s model list for the full catalog.