Create a Dream

beta.dreams.create(**kwargs) -> BetaDream

POST/v1/dreams

Create a Dream

Parameters

One of the following:

class BetaDreamMemoryStoreInput { memory_store_id, type }

An input memory store the dream reads from. The dream never mutates this store unless it is also the destination: with output_behavior {type: "update_existing"} the job consolidates this store in place.

memory_store_id: String

minLength1

type: :memory_store

class BetaDreamSessionsInput { session_ids, type }

Input session transcripts the dream reads.

session_ids: Array[String]

type: :sessions

model: String | BetaDreamModelConfigParam { id, speed }

Model identifier and configuration applied to every pipeline stage.

One of the following:

String = String

class BetaDreamModelConfigParam { id, speed }

Model identifier and configuration applied to every pipeline stage.

id: String

Model identifier, e.g. "claude-opus-5". 1-256 characters.

minLength1

maxLength256

speed: :standard | :fast

Inference speed mode. fast provides significantly faster output token generation at premium pricing. Not all models support fast; invalid combinations are rejected at create time.

One of the following:

:standard

:fast

instructions: String

minLength1

maxLength4096

output_behavior: BetaOutputBehavior

The default destination: the job creates a new output memory store as a clone of the memory_store input and writes the consolidated memories into it. The input store is never mutated.

One of the following:

class BetaOutputBehaviorCreateNew { type }

The default destination: the job creates a new output memory store as a clone of the memory_store input and writes the consolidated memories into it. The input store is never mutated.

type: :create_new

class BetaOutputBehaviorUpdateExisting { memory_store_id, type }

The job writes the consolidated memories into this existing memory store instead of creating one. In EAP the store must be the job's own memory_store input, so the job consolidates the store in place.

memory_store_id: String

minLength1

type: :update_existing

betas: Array[AnthropicBeta]

Optional header to specify the beta version(s) you want to use.

One of the following:

String = String

AnthropicBeta = :"message-batches-2024-09-24" | :"prompt-caching-2024-07-31" | :"computer-use-2024-10-22" | 38 more

One of the following:

:"message-batches-2024-09-24"

:"prompt-caching-2024-07-31"

:"computer-use-2024-10-22"

:"computer-use-2025-01-24"

:"pdfs-2024-09-25"

:"token-counting-2024-11-01"

:"token-efficient-tools-2025-02-19"

:"output-128k-2025-02-19"

:"files-api-2025-04-14"

:"mcp-client-2025-04-04"

:"mcp-client-2025-11-20"

:"dev-full-thinking-2025-05-14"

:"interleaved-thinking-2025-05-14"

:"code-execution-2025-05-22"

:"extended-cache-ttl-2025-04-11"

:"context-1m-2025-08-07"

:"context-management-2025-06-27"

:"model-context-window-exceeded-2025-08-26"

:"skills-2025-10-02"

:"fast-mode-2026-02-01"

:"output-300k-2026-03-24"

:"user-profiles-2026-03-24"

:"user-profiles-2026-08-18"

:"advisor-tool-2026-03-01"

:"managed-agents-2026-04-01"

:"cache-diagnosis-2026-04-07"

:"dreaming-2026-04-21"

:"thinking-token-count-2026-05-13"

:"server-side-fallback-2026-06-01"

:"server-side-fallback-2026-07-01"

:"fallback-credit-2026-06-01"

:"fallback-credit-2026-07-01"

:"agent-memory-2026-07-22"

:"mid-conversation-tool-changes-2026-07-01"

:"compact-2026-01-12"

:"computer-use-2025-11-24"

:"mcp-tunnels-2026-06-22"

:"structured-outputs-2025-11-13"

:"task-budgets-2026-03-13"

:"thinking-display-updates-2026-08-18"

:"ce-user-management-2026-07-13"

Returns

class BetaDream { id, archived_at, created_at, 11 more }

An asynchronous memory-consolidation job that reads a memory store plus a set of session transcripts and writes consolidated memories into an output memory store — a new store by default, or an existing store chosen via output_behavior. The Dreams API is in research preview: the request and response shapes are volatile and may change without the deprecation period that applies to generally-available endpoints.

Create a Dream

require "anthropic"

anthropic = Anthropic::Client.new(api_key: "my-anthropic-api-key")

beta_dream = anthropic.beta.dreams.create(inputs: [{memory_store_id: "x", type: :memory_store}], model: "string")

puts(beta_dream)

{
  "id": "id",
  "archived_at": "2019-12-27T18:11:19.117Z",
  "created_at": "2019-12-27T18:11:19.117Z",
  "ended_at": "2019-12-27T18:11:19.117Z",
  "error": {
    "message": "message",
    "type": "type"
  },
  "inputs": [
    {
      "memory_store_id": "x",
      "type": "memory_store"
    }
  ],
  "instructions": "instructions",
  "model": {
    "id": "x",
    "speed": "standard"
  },
  "output_behavior": {
    "type": "create_new"
  },
  "outputs": [
    {
      "memory_store_id": "memory_store_id",
      "type": "memory_store"
    }
  ],
  "session_id": "session_id",
  "status": "pending",
  "type": "dream",
  "usage": {
    "cache_creation_input_tokens": 0,
    "cache_read_input_tokens": 0,
    "input_tokens": 0,
    "output_tokens": 0
  }
}

Returns Examples

{
  "id": "id",
  "archived_at": "2019-12-27T18:11:19.117Z",
  "created_at": "2019-12-27T18:11:19.117Z",
  "ended_at": "2019-12-27T18:11:19.117Z",
  "error": {
    "message": "message",
    "type": "type"
  },
  "inputs": [
    {
      "memory_store_id": "x",
      "type": "memory_store"
    }
  ],
  "instructions": "instructions",
  "model": {
    "id": "x",
    "speed": "standard"
  },
  "output_behavior": {
    "type": "create_new"
  },
  "outputs": [
    {
      "memory_store_id": "memory_store_id",
      "type": "memory_store"
    }
  ],
  "session_id": "session_id",
  "status": "pending",
  "type": "dream",
  "usage": {
    "cache_creation_input_tokens": 0,
    "cache_read_input_tokens": 0,
    "input_tokens": 0,
    "output_tokens": 0
  }
}