Qwen: Qwen3.8 Max

qwen/qwen3.8-max · Alibaba (Qwen)Not yet established

Declared family: Qwen
Evidence confidence: Unknown
Declared tokenizer tag: Qwen
Entered catalogue: 3 August 2026
Last tested: Not yet measured
Measurement: Awaiting measurement

Evidence stack

Signals of different kinds, weighed together

Signal	Result	Reference
Tokenizer signature	Not measured	–
API surface	No other entry shares this exact contract	api_778de4cb
Context and output	1,000,000 context · 131,072 max output	declared
Reasoning contract	Mandatory · efforts xhigh, high, medium, low, minimal · default xhigh	declared
Serving providers observed	None recorded yet	–

Declared record

What the catalogue claims about this model

Qwen3.8 Max is the flagship model in Alibaba's Qwen3.8 series, the general-availability successor to the Qwen3.8 Max Preview. It is a multimodal reasoning model intended for complex reasoning, visual understanding,...

Modalities: text+image+video->text
Declared tokenizer: Qwen
Prompt price: $2.00 / M tokens
Completion price: $6.00 / M tokens

Supported parameters

frequency_penaltyinclude_reasoninglogprobsmax_tokenspresence_penaltyreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

defaults: {}

Catalogue entry

History

Every observation, kept as taken

3 August 2026Enters the OpenRouter catalogue declared as Qwen.

Cite this page as the evidence record for Qwen: Qwen3.8 Max: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.