Source: https://ailoot.ai/models/en/openai-text-embedding-3-large/
Canonical: https://ailoot.ai/models/en/openai-text-embedding-3-large/
Language: en

# OpenAI: Text Embedding 3 Large

[Markdown](https://ailoot.ai/models/en/openai-text-embedding-3-large/index.md) · [JSON](https://ailoot.ai/models/en/openai-text-embedding-3-large/facts.json)

## [OpenAI: Text Embedding 3 Large](https://ailoot.ai/models/en/openai-text-embedding-3-large/)

OpenAI’s larger third-generation text-embedding model returns 3,072-dimensional vectors by default, with a producer control for shorter representations. Use it for semantic retrieval, multilingual comparison and related-content or classification workflows.

- [**Ailoot Ultra · Embeddings** `POST /v1/embeddings` `openai/text-embedding-3-large`](https://ailoot.ai/models/en/openai-text-embedding-3-large/#method-0)
- [**Ailoot Ultra · Embeddings · text-embedding-3-large** `POST /v1/embeddings` `text-embedding-3-large`](https://ailoot.ai/models/en/openai-text-embedding-3-large/#method-1)

About the model

This description covers the model’s capabilities. Available in Ailoot inputs, outputs and options are listed for the selected method below.

text-embedding-3-large is OpenAI’s larger third-generation text-embedding model for English and non-English tasks. It maps written material to a numerical vector, returning 3,072 components by default. The vector represents relationships in the supplied content; a retrieval or classification process uses it to select material or make another decision.

The third-generation models are trained to support shorter representations through the producer’s dimensions control. The maker gives 1,024 dimensions as an example when a vector store requires that size. A shorter vector reduces the amount of data to store and compare, while changing the representation can affect retrieval quality. Choose the size for the application’s requirements and use that same choice for the corpus and its queries.

An illustrative document-search workflow divides source material into meaningful passages, retains their identifiers and obtains vectors for each passage. A question is embedded using the same model and dimensions, then compared with the passage vectors. The application supplies filters, selects the ranked results and shows their source references. A subsequent text-generation model can develop an answer from the retrieved material; the embedding model’s result remains numerical data.

Other documented applications include code or text search, grouping similar records, related-content recommendations, classification, anomaly detection and measuring diversity in a collection. For a recommendation, describe the objects in the terms relevant to the relationship. For classification, compare against category representations or use vectors as features in a classifier. Define the rule that turns similarity into the result needed by the product.

OpenAI lists an 8,192-token maximum input per text. The embedding API accepts strings or tokenized text, supports multiple inputs and rejects empty strings. It also enforces a 300,000-token aggregate limit for one request. A long document should be divided with its meaningful boundaries and context intact, keeping each vector connected to its source passage.

The producer documents float vectors as the default output and base64 as an alternative encoding. The guide recommends cosine similarity and states that OpenAI embeddings are normalized to unit length, allowing a dot product for cosine similarity and equivalent rankings under Euclidean distance. If a third-generation vector is shortened manually after generation, the maker instructs the application to normalize the shortened vector again; using the dimensions control is the recommended route.

Prepare a consistent text representation and record the model, dimensions and source identifier. A useful final artifact is a ranked set of passages, related items or grouped records whose selection rule is explicit. Assess whether the result addresses the query and preserve the source evidence for the next stage, rather than treating vector similarity as verification of a record’s factual claims.

**Ailoot Ultra · Embeddings** `POST /v1/embeddings` `openai/text-embedding-3-large`

[`openai/text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=openai%2Ftext-embedding-3-large&fmt=embeddings)

OpenAI /`openai/text-embedding-3-large`

Model ID

- `openai/text-embedding-3-large`
- `text-embedding-3-large`

### Overview

OpenAI’s larger third-generation text-embedding model returns 3,072-dimensional vectors by default, with a producer control for shorter representations. Use it for semantic retrieval, multilingual comparison and related-content or classification workflows.

Accepted inputs

Text · token\_ids

Results

embedding

### Available in Ailoot · inputs & methods

**Ailoot Ultra · Embeddings** `POST /v1/embeddings`

Input types

`text`, `token_ids`

Output types

`embedding`

Context

8,192 tokens

Output format

json

| Field | Type | Requirement | Values & limits | Default |
| --- | --- | --- | --- | --- |
| Field`model` | Type`string` | RequirementRequired | Values & limits openai/text-embedding-3-large | Default— |
| Field`input` | Type`string\|string[]\|integer[]\|integer[][]` | RequirementRequired | Values & limits Minimum items: 1 Conditions: Nonempty homogeneous batch. Token IDs are nonnegative integers. Input budget: Maximum: 8,192 · Text unit: UTF8 bytes · Token unit: token-array elements | Default— |
| Field`encoding_format` | Type`string` | RequirementOptional | Values & limits float | Defaultfloat |
| Field`dimensions` | Type`integer` | RequirementNot supported | Values & limits Minimum: 1 | Default— |
| Field`user` | Type`json_value` | RequirementOptional | Values & limits Conditions: Source allows this JSON metadata field; exact upstream semantics are model-specific. | Default— |
| Field`session_id` | Type`json_value` | RequirementOptional | Values & limits Conditions: Source allows this JSON metadata field; exact upstream semantics are model-specific. | Default— |
| Field`trace` | Type`json_value` | RequirementOptional | Values & limits Conditions: Source allows this JSON metadata field; exact upstream semantics are model-specific. | Default— |
| Field`provider` | Type`object` | RequirementOptional | Values & limits Conditions: provider.options rejected | Default— |

Input material combinations

**text\_to\_embedding**

Method parameters and lifecycle

| Parameter | Contract |
| --- | --- |
| Parameter`content_type` | Contractapplication/json |
| Parameter`required` | Contractmodel, input |
| Parameter`input_shapes` | Contractstring, string\[\], nonnegative\_integer\_token\_array, nonnegative\_integer\_token\_array\[\] |
| Parameter`encoding_format` | Contractfloat |
| Parameter`dimensions_override` | Contractfalse |
| Parameter`max_input_budget_units` | Contract8192 |
| Parameter`multimodal_objects` | Contractfalse |
| Parameter`material_types` | Contracttext, token\_ids |

Lifecycle: `synchronous_json`

Keep every vector index and dimension.

Multimodal model name does not admit image objects on this exact path.

### Pricing

Tariff references do not add request options. Supported parameters are listed for the selected method.

Fast mode

Standard rate When fast mode is selected

Flex mode

Standard rate When flex mode is selected

Maximum reasoning effort

Standard rate When maximum reasoning effort uses the default adjustment

#### Ailoot rates

#### Prices by configuration

| Configuration | Rate schedule | Charge |
| --- | --- | --- |
| ConfigurationBase token rates | Rate scheduleBase rate | Charge Input · Input tokens **$0.00026** / 1K tokens Output · Output tokens **$0** / 1K tokens Input · Cache read **—** / 1K tokens Input · Cache write **—** / 1K tokens Input · Cache write, 1 hour **—** / 1K tokens |

Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/)

### Example requests

#### Ailoot Ultra · Embeddings

curlPython SDK

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
python3 - <<'PY_REQUEST'
import json,os
from pathlib import Path
p=json.loads('{"model": "openai/text-embedding-3-large", "input": ["First document", "Second document"]}')

Path("request.json").write_text(json.dumps(p,ensure_ascii=False))
PY_REQUEST
curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/embeddings \
  -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \
  --data-binary @request.json -D response-headers.txt -o result.json
python3 - <<'PY_RESULT'
import json
from pathlib import Path
r=json.loads(Path("result.json").read_text())
for x in r.get("data",[]): print(json.dumps({"index":x.get("index"),"embedding":x.get("embedding")}))
PY_RESULT
```

```python
from openai import OpenAI
import os

client=OpenAI(base_url="https://api.ailoot.ai/v1",api_key=os.environ["AILOOT_API_KEY"],max_retries=0)
result=client.embeddings.create(model='openai/text-embedding-3-large',input=["First document","Second document"])
print(result)
for item in result.data:print(item.index,item.embedding)
```

### Receive and save results

#### Ailoot Ultra · Embeddings

json

##### Keep all completed results

Keep every complete returned response, file and content part.

Keep every vector with its index. Vector count must equal input count; dimensions must be consistent.

##### If the original response needs checking

No embedding job endpoint is introduced.

Response fields

| Field | Type |
| --- | --- |
| Field`object` | Typestring |
| Field`model` | Typestring |
| Field`data[].index` | Typeinteger |
| Field`data[].embedding` | Typefinite float\[\] |
| Field`usage` | Typeobject |

Errors and next steps

| Response | Condition | Next step |
| --- | --- | --- |
| Response400 · `invalid_request_error` | ConditionInvalid required fields, material representation or parameter value | Next stepCorrect the indicated fields before a new creation request. |

### Aliases

#### Model aliases

**Ailoot Ultra** [`openai/text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=openai%2Ftext-embedding-3-large&fmt=embeddings), [`text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=text-embedding-3-large&fmt=embeddings)

#### Method path aliases

Use the method paths shown above.

#### Related caller IDs

[`openai/text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=openai%2Ftext-embedding-3-large&fmt=embeddings), [`text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=text-embedding-3-large&fmt=embeddings)

**Ailoot Ultra · Embeddings · text-embedding-3-large** `POST /v1/embeddings` `text-embedding-3-large`

[`text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=text-embedding-3-large&fmt=embeddings)

OpenAI /`text-embedding-3-large`

Model ID

- `openai/text-embedding-3-large`
- `text-embedding-3-large`

### Overview

OpenAI’s larger third-generation text-embedding model returns 3,072-dimensional vectors by default, with a producer control for shorter representations. Use it for semantic retrieval, multilingual comparison and related-content or classification workflows.

Accepted inputs

Text

Results

embedding

### Available in Ailoot · inputs & methods

**Ailoot Ultra · Embeddings · text-embedding-3-large** `POST /v1/embeddings`

Input types

`text`

Output types

`embedding`

Context

8,192 tokens

Output format

json

| Field | Type | Requirement | Values & limits | Default |
| --- | --- | --- | --- | --- |
| Field`model` | Type`string` | RequirementRequired | Values & limits text-embedding-3-large | Default— |
| Field`input` | Type`string\|string[]\|integer[]\|integer[][]` | RequirementRequired | Values & limits Minimum items: 1 Conditions: Nonempty homogeneous batch. Token IDs are nonnegative integers. Input budget: Maximum: 8,192 · Text unit: UTF8 bytes · Token unit: token-array elements | Default— |
| Field`encoding_format` | Type`string` | RequirementOptional | Values & limits float | Defaultfloat |
| Field`dimensions` | Type`integer` | RequirementNot supported | Values & limits Minimum: 1 | Default— |
| Field`user` | Type`json_value` | RequirementOptional | Values & limits Conditions: Optional JSON metadata; exact upstream semantics depend on the selected model. | Default— |
| Field`session_id` | Type`json_value` | RequirementOptional | Values & limits Conditions: Optional JSON metadata; exact upstream semantics depend on the selected model. | Default— |
| Field`trace` | Type`json_value` | RequirementOptional | Values & limits Conditions: Optional JSON metadata; exact upstream semantics depend on the selected model. | Default— |
| Field`provider` | Type`object` | RequirementOptional | Values & limits Conditions: provider.options rejected | Default— |

Input material combinations

**text\_to\_embedding**

Method parameters and lifecycle

| Parameter | Contract |
| --- | --- |
| Parameter`content_type` | Contractapplication/json |
| Parameter`required` | Contractmodel, input |
| Parameter`input_shapes` | Contractstring, string\[\], nonnegative\_integer\_token\_array, nonnegative\_integer\_token\_array\[\] |
| Parameter`encoding_format` | Contractfloat |
| Parameter`dimensions_override` | Contractfalse |
| Parameter`max_input_budget_units` | Contract8192 |
| Parameter`multimodal_objects` | Contractfalse |
| Parameter`material_types` | Contracttext |
| Parameter`text_file_material` | ContractRead the actual UTF-8 document and put its text in the indicated input or message content string. |

Lifecycle: `synchronous_json`

Send the exact model ID and required fields.

Keep every returned item and its original identifiers.

### Pricing

Tariff references do not add request options. Supported parameters are listed for the selected method.

Fast mode

Standard rate When fast mode is selected

Flex mode

Standard rate When flex mode is selected

Maximum reasoning effort

Standard rate When maximum reasoning effort uses the default adjustment

#### Ailoot rates

#### Prices by configuration

| Configuration | Rate schedule | Charge |
| --- | --- | --- |
| ConfigurationBase token rates | Rate scheduleBase rate | Charge Input · Input tokens **$0.00026** / 1K tokens Output · Output tokens **$0** / 1K tokens Input · Cache read **—** / 1K tokens Input · Cache write **—** / 1K tokens Input · Cache write, 1 hour **—** / 1K tokens |

Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/)

### Example requests

#### Ailoot Ultra · Embeddings · text-embedding-3-large

Complete minimal JSON bodycurl · use your UTF-8 documentPython · save the complete result

```json
{
  "model": "text-embedding-3-large",
  "input": [
    "First document",
    "Second document"
  ],
  "encoding_format": "float"
}
```

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_TEXT_FILE:?Set your actual UTF-8 document}"
export AILOOT_TEXT_FILE
python3 - <<'PY_REQUEST'
import json, os
from pathlib import Path

source_file = Path(os.environ['AILOOT_TEXT_FILE'])
if not source_file.is_file():
    raise SystemExit('Set AILOOT_TEXT_FILE to your actual UTF-8 document')
text = source_file.read_text(encoding='utf-8')
if not text.strip():
    raise SystemExit('Choose a document containing text')
payload = {'model': 'text-embedding-3-large', 'input': ['First document', 'Second document'], 'encoding_format': 'float'}
payload['input'] = [text]
Path('request.json').write_text(json.dumps(payload, ensure_ascii=False), encoding='utf-8')
PY_REQUEST
curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/embeddings \
  -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \
  --data-binary @request.json -D response-headers.txt -o result.json
python3 - <<'PY_RESULT'
import json
from pathlib import Path

result = json.loads(Path('result.json').read_text(encoding='utf-8'))
print(json.dumps(result, ensure_ascii=False, indent=2))
for vector in result.get('data', []):
    print('Vector', vector.get('index'), json.dumps(vector.get('embedding')))
PY_RESULT
```

```python
import json, os
from pathlib import Path

source_file = Path(os.environ['AILOOT_TEXT_FILE'])
if not source_file.is_file():
    raise SystemExit('Set AILOOT_TEXT_FILE to your actual UTF-8 document')
text = source_file.read_text(encoding='utf-8')
if not text.strip():
    raise SystemExit('Choose a document containing text')
payload = {'model': 'text-embedding-3-large', 'input': ['First document', 'Second document'], 'encoding_format': 'float'}
payload['input'] = [text]
from urllib.request import Request, urlopen
from urllib.error import HTTPError

api_key = os.environ['AILOOT_API_KEY']
if not api_key.strip():
    raise SystemExit('Set AILOOT_API_KEY before making a request')
headers = {'Authorization': 'Bearer PLACEHOLDER_KEY', 'Content-Type': 'application/json'}
headers['Authorization'] = 'Bearer ' + api_key
request = Request('https://api.ailoot.ai/v1/embeddings', data=json.dumps(payload, ensure_ascii=False).encode('utf-8'), headers=headers, method='POST')
try:
    with urlopen(request, timeout=120) as response:
        raw = response.read()
        Path('response-headers.txt').write_text(str(response.headers), encoding='utf-8')
except HTTPError as error:
    Path('result.json').write_bytes(error.read())
    Path('response-headers.txt').write_text(str(error.headers), encoding='utf-8')
    raise
Path('result.json').write_bytes(raw)
import json
from pathlib import Path

result = json.loads(Path('result.json').read_text(encoding='utf-8'))
print(json.dumps(result, ensure_ascii=False, indent=2))
for vector in result.get('data', []):
    print('Vector', vector.get('index'), json.dumps(vector.get('embedding')))
```

### Receive and save results

#### Ailoot Ultra · Embeddings · text-embedding-3-large

json

##### Keep all completed results

Keep every complete returned response, file and content part.

Keep every finite vector with its original index. Preserve all dimensions and the complete usage object.

##### If the original response needs checking

No embedding job endpoint is introduced.

Response fields

| Field | Type |
| --- | --- |
| Field`object` | Typestring |
| Field`model` | Typestring |
| Field`data[].index` | Typeinteger |
| Field`data[].embedding` | Typefinite float\[\] |
| Field`usage` | Typeobject |

Errors and next steps

| Response | Condition | Next step |
| --- | --- | --- |
| Response400 · `invalid_request_error` | ConditionInvalid required fields, material representation or parameter value | Next stepCorrect the indicated fields before a new creation request. |

### Aliases

#### Model aliases

**Ailoot Ultra** [`openai/text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=openai%2Ftext-embedding-3-large&fmt=embeddings), [`text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=text-embedding-3-large&fmt=embeddings)

#### Method path aliases

Use the method paths shown above.

#### Related caller IDs

[`openai/text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=openai%2Ftext-embedding-3-large&fmt=embeddings), [`text-embedding-3-large`](https://ailoot.ai/models/en/#m=openai%2Ftext-embedding-3-large&route=Ultra&caller=text-embedding-3-large&fmt=embeddings)

FAQ · OpenAI: Text Embedding 3 Large

What inputs and results are available?

`POST /v1/embeddings` · `openai/text-embedding-3-large`: `text`, `token_ids` → `embedding` `POST /v1/embeddings` · `text-embedding-3-large`: `text` → `embedding`

Which fields does the request use?

`POST /v1/embeddings` · `openai/text-embedding-3-large`: `model`, `input`, `encoding_format`, `provider` `POST /v1/embeddings` · `text-embedding-3-large`: `model`, `input`, `encoding_format`, `provider`

What limits apply?

`POST /v1/embeddings` · `openai/text-embedding-3-large`: `ctx`: `8192`; `input.budget.maximum`: `8192` (UTF8 bytes); `input.min_items`: `1` `POST /v1/embeddings` · `text-embedding-3-large`: `ctx`: `8192`; `input.budget.maximum`: `8192` (UTF8 bytes); `input.min_items`: `1`

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