anthropic.go•4.06 kB
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package anthropic
import (
"context"
"os"
"github.com/firebase/genkit/go/ai"
"github.com/firebase/genkit/go/core/api"
"github.com/firebase/genkit/go/genkit"
"github.com/firebase/genkit/go/plugins/compat_oai"
"github.com/openai/openai-go/option"
)
const (
provider = "anthropic"
baseURL = "https://api.anthropic.com/v1"
)
// Supported models: https://docs.anthropic.com/en/docs/about-claude/models/all-models
var supportedModels = map[string]ai.ModelOptions{
"claude-3-7-sonnet-20250219": {
Label: "Claude 3.7 Sonnet",
Supports: &ai.ModelSupports{
Multiturn: true,
Tools: false, // NOTE: Anthropic supports tool use, but it's not compatible with the OpenAI API
SystemRole: true,
Media: true,
},
Versions: []string{"claude-3-7-sonnet-latest", "claude-3-7-sonnet-20250219"},
},
"claude-3-5-haiku-20241022": {
Label: "Claude 3.5 Haiku",
Supports: &ai.ModelSupports{
Multiturn: true,
Tools: false, // NOTE: Anthropic supports tool use, but it's not compatible with the OpenAI API
SystemRole: true,
Media: true,
},
Versions: []string{"claude-3-5-haiku-latest", "claude-3-5-haiku-20241022"},
},
"claude-3-5-sonnet-20240620": {
Label: "Claude 3.5 Sonnet",
Supports: &ai.ModelSupports{
Multiturn: true,
Tools: false, // NOTE: Anthropic supports tool use, but it's not compatible with the OpenAI API
SystemRole: false, // NOTE: This model does not support system role
Media: true,
},
Versions: []string{"claude-3-5-sonnet-20240620"},
},
"claude-3-opus-20240229": {
Label: "Claude 3 Opus",
Supports: &ai.ModelSupports{
Multiturn: true,
Tools: false, // NOTE: Anthropic supports tool use, but it's not compatible with the OpenAI API
SystemRole: false, // NOTE: This model does not support system role
Media: true,
},
Versions: []string{"claude-3-opus-latest", "claude-3-opus-20240229"},
},
"claude-3-haiku-20240307": {
Label: "Claude 3 Haiku",
Supports: &ai.ModelSupports{
Multiturn: true,
Tools: false, // NOTE: Anthropic supports tool use, but it's not compatible with the OpenAI API
SystemRole: false, // NOTE: This model does not support system role
Media: true,
},
Versions: []string{"claude-3-haiku-20240307"},
},
}
type Anthropic struct {
Opts []option.RequestOption
openAICompatible compat_oai.OpenAICompatible
}
// Name implements genkit.Plugin.
func (a *Anthropic) Name() string {
return provider
}
func (a *Anthropic) Init(ctx context.Context) []api.Action {
url := os.Getenv("ANTHROPIC_BASE_URL")
if url == "" {
url = baseURL
}
a.Opts = append([]option.RequestOption{option.WithBaseURL(url)}, a.Opts...)
apiKey := os.Getenv("ANTHROPIC_API_KEY")
if apiKey != "" {
a.Opts = append([]option.RequestOption{option.WithAPIKey(apiKey)}, a.Opts...)
}
// initialize OpenAICompatible
a.openAICompatible.Opts = a.Opts
compatActions := a.openAICompatible.Init(ctx)
var actions []api.Action
actions = append(actions, compatActions...)
// define default models
for model, opts := range supportedModels {
actions = append(actions, a.DefineModel(model, opts).(api.Action))
}
return actions
}
func (a *Anthropic) Model(g *genkit.Genkit, id string) ai.Model {
return a.openAICompatible.Model(g, api.NewName(provider, id))
}
func (a *Anthropic) DefineModel(id string, opts ai.ModelOptions) ai.Model {
return a.openAICompatible.DefineModel(provider, id, opts)
}