Class: AISpec::Core::Providers::Anthropic

Inherits:
Base
  • Object
show all
Defined in:
lib/aispec/core/providers/anthropic.rb

Constant Summary collapse

BASE_URI = 
"https://api.anthropic.com/v1/messages"

Instance Attribute Summary

Attributes inherited from Base

#model, #options

Instance Method Summary collapse

Methods inherited from Base

get, register

Constructor Details

#initialize(model: "claude-3-5-sonnet-20241022", api_key: nil, **options) ⇒ Anthropic

Returns a new instance of Anthropic.



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# File 'lib/aispec/core/providers/anthropic.rb', line 13

def initialize(model: "claude-3-5-sonnet-20241022", api_key: nil, **options)
  super(model: model, **options)
  @api_key = api_key || ENV["ANTHROPIC_API_KEY"]
end

Instance Method Details

#generate(prompt, system_prompt: nil, temperature: 0.7, max_tokens: 1024, **_params) ⇒ Object 



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# File 'lib/aispec/core/providers/anthropic.rb', line 18

def generate(prompt, system_prompt: nil, temperature: 0.7, max_tokens: 1024, **_params)
  return fallback_mock_if_no_key(prompt) unless @api_key && !@api_key.empty?

  payload = {
    model: @model || "claude-3-5-sonnet-20241022",
    max_tokens: max_tokens,
    messages: [{ role: "user", content: prompt }],
    temperature: temperature
  }
  payload[:system] = system_prompt if system_prompt

  uri = URI.parse(BASE_URI)
  start_time = Process.clock_gettime(Process::CLOCK_MONOTONIC)

  req = Net::HTTP::Post.new(uri.path, {
    "Content-Type" => "application/json",
    "x-api-key" => @api_key,
    "anthropic-version" => "2023-06-01"
  })
  req.body = JSON.generate(payload)

  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  http.read_timeout = AISpec.configuration.timeout

  res = http.request(req)
  elapsed_ms = (Process.clock_gettime(Process::CLOCK_MONOTONIC) - start_time) * 1000.0

  if res.is_a?(Net::HTTPSuccess)
    data = JSON.parse(res.body)
    output = data.dig("content", 0, "text") || ""
    input_tokens = data.dig("usage", "input_tokens") || 0
    output_tokens = data.dig("usage", "output_tokens") || 0
    total_tokens = input_tokens + output_tokens

    cost = (input_tokens * 0.000003) + (output_tokens * 0.000015)

    build_response(
      output: output,
      latency_ms: elapsed_ms,
      tokens: total_tokens,
      cost: cost,
      raw: data
    )
  else
    raise "Anthropic API Error (#{res.code}): #{res.body}"
  end
end