Released 13 days after Qwen 3 Coder Next · All Alibaba releases
Qwen3.5 397B A17B is Alibaba's large sparse Mixture-of-Experts model with 397 billion total parameters and 17 billion activated per token, built for frontier-class reasoning and coding. It is multimodal across text, image, and video, with a 262,144 token native context window extensible toward roughly one million tokens with YaRN scaling. Reported scores include MMLU-Pro 87.8, MMMU-Pro 79.0, and SWE-bench Verified 76.4. The model runs in thinking mode by default, generating reasoning tokens before its response, and supports recommended output lengths up to 81,920 tokens for hard problems. It targets demanding agentic workflows, repository-level code reasoning, structured outputs, and tool calling across more than 200 languages.
Call Qwen 3.5 397B on Opper with the OpenAI SDK. Sign up without a credit card. Get started
Qwen 3.5 397B runs on 7 different routes through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below.
Qwen 3.5 397B runs on 3 independently monitored routes through the Opper gateway. A direct integration leaves you on one of them, the gateway serves whichever is healthy.
Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. 4 further routes for this model are not on the board yet and are not counted above. See uptime for every provider Opper monitors.
Each route hosting Qwen 3.5 397B has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.
Zero data retention: nothing is logged, held for abuse monitoring or used for training. No training on customer data. US; unknown; DPA available.
Zero data retention with abuse monitoring: nothing is logged or used for training; content flagged by abuse monitoring is held for review. No training on customer data. US; dpf sccs; DPA available.
Zero data retention: nothing is logged, held for abuse monitoring or used for training. No training on customer data. EU; DPA available.
Zero data retention with abuse monitoring: prompts and outputs are kept for up to 30 days for abuse monitoring only, and are not used for training. No training on customer data. US; SCCs; DPA available.
Content is retained: provider logging. No training on customer data. GLOBAL; SCCs; DPA available.
Zero data retention: nothing is logged, held for abuse monitoring or used for training. No training on customer data. US; SCCs; DPA available.
Zero data retention with abuse monitoring: prompts and outputs are kept for up to 14 days for abuse monitoring only, and are not used for training. No training on customer data. EU; DPA available.
Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.
Call Qwen 3.5 397B through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.
Qwen 3.5 397B is a premium model on Opper. Sign up needs no credit card: you get an API key straight away and the free models work in the playground and the API. Add a card to use premium models, pay-as-you-go with no minimum.
Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.
import OpenAI from "openai";const client = new OpenAI({apiKey: process.env.OPPER_API_KEY,baseURL: "https://api.opper.ai/v3/compat",});const completion = await client.chat.completions.create({model: "qwen3.5-397b-a17b",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
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