Alibaba Qwen's 3.8-generation Flash tier: the cost/latency entry point into the 3.8 line, with a 1M-token context window.
Qwen3.8 Flash is Alibaba Qwen's low-cost 3.8-generation text route exposed in TheRouter as qwen/qwen3.8-flash. The live TheRouter catalog positions it as the cost and latency entry point into the Qwen3.8 line, with the same 1M-token context window and 131K maximum completion cap recorded for the other 3.8 text routes.
Use it as a traffic lane, not as the flagship. It is the right first candidate for classification, extraction, summaries, short agent steps, and long-context text jobs where qwen/qwen3.8-max or qwen/qwen3.8-27b would waste budget. Because the route is text input and text output in TheRouter, visual analysis should stay on qwen/qwen3.8-max or another configured vision model.
This page is intentionally scoped to the TheRouter route. Pricing, context, output limits, modalities, and supported parameters are rendered from standard-models.yaml; the curated layer explains when to choose the route and where upstream or provider documentation should not be over-read into TheRouter behavior.
Alibaba Cloud and Qwen materials describe the Qwen3.8 family and provider-side model ids. Provider documentation may include regional pricing, rolling availability, and model-family behavior that changes outside this repository.
TheRouter currently serves qwen/qwen3.8-flash as a text-input, text-output OpenAI-compatible chat route with catalog pricing and parameters taken from standard-models.yaml.
| Type | Rate |
|---|---|
| Input | $0.162 / 1M tokens |
| Output | $0.5076 / 1M tokens |
| TheRouter route scope | Text input and text output in the current TheRouter cataloggithub.com/therouter/ai-router ↗ | verified |
| Context window | 1,000,000 tokens in TheRouter's cataloggithub.com/therouter/ai-router ↗ | verified |
| TheRouter max completion | 131,072 tokensgithub.com/therouter/ai-router ↗ | verified |
| Supported request parameters | temperature, max_tokens, top_p, tools, tool_choice, response_format, stopgithub.com/therouter/ai-router ↗ | verified |
| TheRouter list pricing | $0.15 input / $0.47 output per 1M tokens in the standard cataloggithub.com/therouter/ai-router ↗ | verified |
| International provider price card | Alibaba Cloud Model Studio international USD pricing was the source noted for the 3.8 family in TheRouter configalibabacloud.com ↗ | verified |
| Benchmark | Distribution | Score | Source |
|---|---|---|---|
Published Qwen3.8 Flash benchmark table The scheduled curator run did not execute paid or third-party benchmark verification. Treat vendor-reported numbers as routing context until a funded evaluation ledger exists. | — | Not publicly disclosed | — |
TheRouter text routing evals No internal pass/fail ledger for TheRouter Flash workloads was produced in this no-budget page fill. | — | Not publicly disclosed | — |
Latency and throughput Flash naming is a cost and latency signal, not a TheRouter measurement. Run a workload-specific benchmark before promoting this route to production defaults. | — | Not publicly disclosed | — |
Use the global api.therouter.ai endpoint shown below for new integrations; the legacy China accelerated endpoint is retired.
curl https://api.therouter.ai/v1/chat/completions -H "Content-Type: application/json" -H "Authorization: Bearer $THE_ROUTER_API_KEY" -d '{
"model": "qwen/qwen3.8-flash",
"messages": [
{"role": "user", "content": "Summarize the key points from this input."}
]
}'Use the standard OpenAI-compatible chat route with the public TheRouter model id.
curl https://api.therouter.ai/v1/chat/completions \
-H "Authorization: Bearer $THEROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"qwen/qwen3.8-flash","messages":[{"role":"user","content":"Summarize this incident report into three action items."}]}'The standard-models.yaml entry records a live verification against the deployed provider service with the upstream echoing the exact qwen/qwen3.8-flash id. That makes the catalog route a verified TheRouter behavior, not only a vendor listing.
Choose it when the workload is text-only, cost-sensitive, and likely to pass evals on a Flash-class model. It is a strong first lane for extraction, classification, summarization, and lightweight agent steps before escalating to qwen/qwen3.8-27b or qwen/qwen3.8-max.
No. The current TheRouter catalog lists text input and text output for this route. Use qwen/qwen3.8-max or another configured vision route for screenshots, OCR, image review, or video-frame reasoning.
The snippets component only increases after a verification ledger record exists. This scheduled run had no paid API budget and did not execute snippets, so the page is expected to remain capped near the non-snippet ceiling until a human approves a funded verification run.
| source | URL | retrieved | |
|---|---|---|---|
| TheRouter route scope | github.com/therouter/ai-router ↗ | 2026-09-22 | verified |
| Context window | github.com/therouter/ai-router ↗ | 2026-09-22 | verified |
| TheRouter max completion | github.com/therouter/ai-router ↗ | 2026-09-22 | verified |
| Supported request parameters | github.com/therouter/ai-router ↗ | 2026-09-22 | verified |
| TheRouter list pricing | github.com/therouter/ai-router ↗ | 2026-09-22 | verified |
| International provider price card | alibabacloud.com ↗ | 2026-09-22 | verified |
| Published Qwen3.8 Flash benchmark table | qwen.ai ↗ | 2026-09-22 | unknown |
| TheRouter text routing evals | github.com/therouter/ai-router ↗ | 2026-09-22 | unknown |
| Latency and throughput | help.aliyun.com ↗ | 2026-09-22 | unknown |
| TheRouter verifies Qwen3.8 Flash in the deployed Aliyun Bailian route | github.com/therouter/ai-router ↗ | 2026-09-22 | verified |
| When should I choose qwen/qwen3.8-flash? | github.com/therouter/ai-router ↗ | 2026-09-22 | to verify |
| Does qwen/qwen3.8-flash support vision through TheRouter? | github.com/therouter/ai-router ↗ | 2026-09-22 | to verify |
| Why does the page still lose completeness points? | github.com/therouter/ai-router ↗ | 2026-09-22 | to verify |