Page history
List Models
api/beta/models/list
History
api/beta/models/list Changed · +15 / -1 lines
from line 32
- `string` - - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more` + - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more` - `"message-batches-2024-09-24"`
from line 101
- `"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
api/beta/models/list Changed · +15 / -16 lines
# List Models ## Query parameters ## Headers ## Returns ## Example ### Response (200) ## List Models ### Query Parameters ### Header Parameters ### Returns ### Example #### Response
from line 1
---- -title: List Models -url: https://platform.claude.com/docs/en/api/beta/models/list ---- +# List Models -## List Models +**GET** `/v1/models` -**get** `/v1/models` - List available models. The Models API response can be used to determine which models are available for use in the API. More recently released models are listed first. -### Query Parameters +## Query parameters - `after_id: optional string`
from line 22
Defaults to `20`. Ranges from `1` to `1000`. -### Header Parameters + default: 20, maximum: 1000, minimum: 1 +## Headers + - `"anthropic-beta": optional array of AnthropicBeta` Optional header to specify the beta version(s) you want to use.
from line 102
- `"mid-conversation-tool-changes-2026-07-01"` -### Returns +## Returns - `data: array of BetaModelInfo`
from line 218
RFC 3339 datetime string representing the time at which the model was released. May be set to an epoch value if the release date is unknown. + format: date-time + - `display_name: string` A human-readable name for the model.
from line 238
For Models, this is always `"model"`. - - `"model"` + default: model - `first_id: string or null`
from line 252
Last ID in the `data` list. Can be used as the `after_id` for the next page. -### Example +## Example -```http +```bash curl https://api.anthropic.com/v1/models \ -H 'anthropic-version: 2023-06-01' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` -#### Response +### Response (200) ```json {
api/beta/models/list Changed · +6 / -4 lines
from line 35
- `string` - - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more` + - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more` - `"message-batches-2024-09-24"`
from line 81
- `"user-profiles-2026-03-24"` + - `"user-profiles-2026-08-18"` + - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"`
from line 267
{ "data": [ { - "id": "claude-opus-4-6", + "id": "claude-opus-5", "allowed_fallback_models": [ "string" ],
from line 332
} } }, - "created_at": "2026-02-04T00:00:00Z", - "display_name": "Claude Opus 4.6", + "created_at": "2026-07-24T00:00:00Z", + "display_name": "Claude Opus 5", "max_input_tokens": 0, "max_tokens": 0, "type": "model"
api/beta/models/list First recorded · 344 lines, first recorded
## List Models ### Query Parameters ### Header Parameters ### Returns ### Example #### Response
The first capture of this source. The page was already there, and this is what it said.
---
title: List Models
url: https://platform.claude.com/docs/en/api/beta/models/list
---
## List Models
**get** `/v1/models`
List available models.
The Models API response can be used to determine which models are available for use in the API. More recently released models are listed first.
### Query Parameters
- `after_id: optional string`
ID of the object to use as a cursor for pagination. When provided, returns the page of results immediately after this object.
- `before_id: optional string`
ID of the object to use as a cursor for pagination. When provided, returns the page of results immediately before this object.
- `limit: optional number`
Number of items to return per page.
Defaults to `20`. Ranges from `1` to `1000`.
### Header Parameters
- `"anthropic-beta": optional array of AnthropicBeta`
Optional header to specify the beta version(s) you want to use.
- `string`
- `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
- `"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"`
- `"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"`
### Returns
- `data: array of BetaModelInfo`
- `id: string`
Unique model identifier.
- `allowed_fallback_models: array of string or null`
Model IDs this model accepts as `fallbacks[i].model` on the Messages API. An empty list means the `fallbacks` parameter is not supported for this model as primary.
- `capabilities: BetaModelCapabilities or null`
Model capability information.
- `batch: BetaCapabilitySupport`
Whether the model supports the Batch API.
- `supported: boolean`
Whether this capability is supported by the model.
- `citations: BetaCapabilitySupport`
Whether the model supports citation generation.
- `code_execution: BetaCapabilitySupport`
Whether the model supports code execution tools.
- `context_management: BetaContextManagementCapability`
Context management support and available strategies.
- `clear_thinking_20251015: BetaCapabilitySupport or null`
Indicates whether a capability is supported.
- `clear_tool_uses_20250919: BetaCapabilitySupport or null`
Indicates whether a capability is supported.
- `compact_20260112: BetaCapabilitySupport or null`
Indicates whether a capability is supported.
- `supported: boolean`
Whether this capability is supported by the model.
- `effort: BetaEffortCapability`
Effort (reasoning_effort) support and available levels.
- `high: BetaCapabilitySupport`
Whether the model supports high effort level.
- `low: BetaCapabilitySupport`
Whether the model supports low effort level.
- `max: BetaCapabilitySupport`
Whether the model supports max effort level.
- `medium: BetaCapabilitySupport`
Whether the model supports medium effort level.
- `supported: boolean`
Whether this capability is supported by the model.
- `xhigh: BetaCapabilitySupport or null`
Indicates whether a capability is supported.
- `image_input: BetaCapabilitySupport`
Whether the model accepts image content blocks.
- `pdf_input: BetaCapabilitySupport`
Whether the model accepts PDF content blocks.
- `structured_outputs: BetaCapabilitySupport`
Whether the model supports structured output / JSON mode / strict tool schemas.
- `thinking: BetaThinkingCapability`
Thinking capability and supported type configurations.
- `supported: boolean`
Whether this capability is supported by the model.
- `types: BetaThinkingTypes`
Supported thinking type configurations.
- `adaptive: BetaCapabilitySupport`
Whether the model supports thinking with type 'adaptive' (auto).
- `enabled: BetaCapabilitySupport`
Whether the model supports thinking with type 'enabled'.
- `created_at: string`
RFC 3339 datetime string representing the time at which the model was released. May be set to an epoch value if the release date is unknown.
- `display_name: string`
A human-readable name for the model.
- `max_input_tokens: number or null`
Maximum input context window size in tokens for this model.
- `max_tokens: number or null`
Maximum value for the `max_tokens` parameter when using this model.
- `type: "model"`
Object type.
For Models, this is always `"model"`.
- `"model"`
- `first_id: string or null`
First ID in the `data` list. Can be used as the `before_id` for the previous page.
- `has_more: boolean`
Indicates if there are more results in the requested page direction.
- `last_id: string or null`
Last ID in the `data` list. Can be used as the `after_id` for the next page.
### Example
```http
curl https://api.anthropic.com/v1/models \
-H 'anthropic-version: 2023-06-01' \
-H "X-Api-Key: $ANTHROPIC_API_KEY"
```
#### Response
```json
{
"data": [
{
"id": "claude-opus-4-6",
"allowed_fallback_models": [
"string"
],
"capabilities": {
"batch": {
"supported": true
},
"citations": {
"supported": true
},
"code_execution": {
"supported": true
},
"context_management": {
"clear_thinking_20251015": {
"supported": true
},
"clear_tool_uses_20250919": {
"supported": true
},
"compact_20260112": {
"supported": true
},
"supported": true
},
"effort": {
"high": {
"supported": true
},
"low": {
"supported": true
},
Cut at 300 lines.