Source: https://ailoot.ai/models/en/qwen2-1-5b-instruct/ Canonical: https://ailoot.ai/models/en/qwen2-1-5b-instruct/ Language: en # qwen2-1.5b-instruct [Markdown](https://ailoot.ai/models/en/qwen2-1-5b-instruct/index.md) · [JSON](https://ailoot.ai/models/en/qwen2-1-5b-instruct/facts.json) ## [qwen2-1.5b-instruct](https://ailoot.ai/models/en/qwen2-1-5b-instruct/) A text-only Qwen2 Instruct route with a 32,000-token input limit and sampling/output controls. - [**Ailoot Ultra · Chat Completions** `POST /v1/chat/completions` `qwen2-1.5b-instruct`](https://ailoot.ai/models/en/qwen2-1-5b-instruct/#method-0) About the model This description covers the model’s capabilities. Available in Ailoot inputs, outputs and options are listed for the selected method below. qwen2-1.5b-instruct is a text-to-text instruction route with a maximum listed text input of 32,000 tokens. A concrete task is extracting a few named fields from a short support message, returning an empty value for fields absent from the source. This bounded task makes the requested result easy to inspect without assuming a size-based quality guarantee. The /v1/chat/completions method exposes max\_tokens or max\_completion\_tokens, temperature, top\_p, seed and stop alongside optional streaming. Its service\_tier values are empty, auto or default; no numeric output ceiling is published here. The 1.5B Instruct label identifies the selection, but the record does not establish a language-specific quality claim or image-input capability. **Ailoot Ultra · Chat Completions** `POST /v1/chat/completions` `qwen2-1.5b-instruct` [`qwen2-1.5b-instruct`](https://ailoot.ai/models/en/#m=qwen2-1.5b-instruct&route=Ultra&caller=qwen2-1.5b-instruct&fmt=chat) Alibaba /`qwen2-1.5b-instruct` ### Overview A text-only Qwen2 Instruct route with a 32,000-token input limit and sampling/output controls. Accepted inputs Text Results Text ### Available in Ailoot · inputs & methods **Ailoot Ultra · Chat Completions** `POST /v1/chat/completions` Input types `text` Output types `text` Context 32,000 tokens Output format JSON or supported SSE | Field | Type | Requirement | Values & limits | Default | | --- | --- | --- | --- | --- | | Field`model` | Type`string` | RequirementRequired | Values & limits qwen2-1.5b-instruct | Default— | | Field`messages` | Type`array` | RequirementRequired | Values & limits | Default— | | Field`stream` | Type`boolean` | RequirementOptional | Values & limits | Defaultfalse | | Field`max_tokens` | Type`integer` | RequirementOptional | Values & limits Minimum: 1 | Default— | | Field`max_completion_tokens` | Type`integer` | RequirementOptional | Values & limits Minimum: 1 | Default— | | Field`n` | Type`integer` | RequirementOptional | Values & limits Minimum: 1 | Default— | | Field`temperature` | Type`number` | RequirementOptional | Values & limits | Default— | | Field`top_p` | Type`number` | RequirementOptional | Values & limits | Default— | | Field`seed` | Type`integer` | RequirementOptional | Values & limits | Default— | | Field`stop` | Type`` | RequirementOptional | Values & limits | Default— | | Field`frequency_penalty` | Type`number` | RequirementOptional | Values & limits | Default— | | Field`presence_penalty` | Type`number` | RequirementOptional | Values & limits | Default— | | Field`user` | Type`string` | RequirementOptional | Values & limits | Default— | | Field`tools` | Type`array` | RequirementOptional | Values & limits | Default— | | Field`service_tier` | Type`string` | RequirementOptional | Values & limits , auto, default | Default— | | Field`modalities` | Type`array` | RequirementOptional | Values & limits | Default— | Method parameters and lifecycle | Parameter | Contract | | --- | --- | | Parameter`content_type` | Contractapplication/json | | Parameter`required` | Contractmodel, messages | | Parameter`optional` | Contractstream, max\_tokens, max\_completion\_tokens, n, temperature, top\_p, seed, stop, frequency\_penalty, presence\_penalty, user, tools, service\_tier, modalities | | Parameter`material_types` | Contracttext | | Parameter`conditions` | ContractUse text input and text output. Explicit cache, hosted tools and media are unavailable. Standard function tools remain a protocol feature and run in the client. | Lifecycle: `synchronous_json_or_sse` ### 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 Explicit cache pricing Not enabled When explicit cache is requested Text-only zero rates Cache, tools and media follow their separately listed pricing conditions. For text-only input and output #### Ailoot rates #### Prices by configuration | Configuration | Rate schedule | Charge | | --- | --- | --- | | ConfigurationBase token rates | Rate scheduleBase rate | Charge Input · Input tokens **$0** / 1K tokens Output · Output tokens **$0** / 1K tokens Input · Cache read **$0** / 1K tokens Input · Cache write **$0** / 1K tokens Input · Cache write, 1 hour **—** / 1K tokens | Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/) ### Example requests #### Ailoot Ultra · Chat Completions curl · create once and retain the complete result ```bash set -eu : "${AILOOT_API_KEY:?Set your Ailoot API key}" export AILOOT_API_KEY python3 - <<'PY_REQUEST' import json,os from pathlib import Path p=json.loads('{"model": "qwen2-1.5b-instruct", "messages": [{"role": "user", "content": "Summarize the supplied text in three concise points."}], "stream": false}') 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/chat/completions \ -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \ --data-binary @request.json -D response-headers.txt -o result.json # Submit once. Retain the complete result, original identifiers and every response header. ``` ### Receive and save results #### Ailoot Ultra · Chat Completions JSON or supported SSE ##### Keep all completed results Keep every complete returned response, file and content part. Retain the complete response, all actual results, original identifiers, usage and response headers. ##### If the original response needs checking Preserve the original response, headers and X-Client-Request-ID. An uncertain outcome does not authorize another creation. ### Aliases #### Model aliases **Ailoot Ultra** [`qwen2-1.5b-instruct`](https://ailoot.ai/models/en/#m=qwen2-1.5b-instruct&route=Ultra&caller=qwen2-1.5b-instruct&fmt=chat) #### Method path aliases Use the method paths shown above. #### Related caller IDs [`qwen2-1.5b-instruct`](https://ailoot.ai/models/en/#m=qwen2-1.5b-instruct&route=Ultra&caller=qwen2-1.5b-instruct&fmt=chat) FAQ · qwen2-1.5b-instruct What inputs and results are available? `POST /v1/chat/completions` · `qwen2-1.5b-instruct`: `text` → `text` Which fields does the request use? `POST /v1/chat/completions` · `qwen2-1.5b-instruct`: `model`, `messages`, `stream`, `max_tokens`, `max_completion_tokens`, `n`, `temperature`, `top_p`, `seed`, `stop`, `frequency_penalty`, `presence_penalty`, `user`, `tools`, `service_tier`, `modalities` What limits apply? `POST /v1/chat/completions` · `qwen2-1.5b-instruct`: `ctx`: `32000`; `max_tokens.minimum`: `1`; `max_completion_tokens.minimum`: `1`; `n.minimum`: `1` Connect Ailoot to Claude Code, OpenCode, Hermes or your own app. ## The company and its project portfolio The company and its project portfolio: millions of customers; monthly sales in the billions. ## Buy tokens at a discount. Subscription discounts for regular use. Promo codes offer up to 50% off token purchases. Subscription Choose a discounted plan for your regular requests. Promo code: up to 50% off Enter your code at checkout. The price updates to reflect the current promotion. Spending in your history The model, tokens and amount are recorded for each request. [Choose a subscription](https://ailoot.ai/docs/en/billing/subscriptions/) · [View model prices](https://ailoot.ai/models/en/) ## Connect the API to a product you sell. Use Ailoot in SaaS, apps and bots under its official service offer and licence agreement. Request a reseller licence for resale. Commercial application Add text, image, video and audio generation to paid features in your service. Reseller licence Send a description of your project and how you provide access. Request written terms for use and resale. Documents on the website The service offer, licence agreement and data processing policy are available before you connect. [Request a reseller licence](mailto:support@ailoot.ai) · [Service offer and licence agreement](https://ailoot.ai/legal/offer?lang=en) ## Ailoot · The company and its project portfolio Ailoot combines established operating experience, a large client base, stable service and ongoing KPI control. The company and its project portfolio: millions of customers; monthly sales in the billions. Ailoot brings that operating experience to API access for AI features in customer products, agents, applications and automations.