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Model details

Qwen3.8 Flash Next

Designed as an architectural preview of the upcoming Qwen4 family, this open-weight release blends text, image, and video inputs into a single multimodal mixture-of-experts model from Alibaba's Qwen team. Independent coverage describes it as a substantially redesigned MoE that combines roughly 125B main parameters with an additional pool of N-gram embeddings and only about 6B parameters activated per token, with further upgrades across attention, residual, embedding, and optimization components. The same reporting also notes meaningful reductions in training and inference cost relative to prior Qwen generations, framing the model as an early look at how the next Qwen generation will balance capability and efficiency.

For practitioners exploring cutting-edge open-weight systems, the practical appeal is having a Qwen4-flavored MoE accessible through a familiar API surface rather than self-hosting the full stack. Requesty exposes it under its own catalog id with a 262,144-token context window, making it well suited to long-form document reasoning, multimodal attachments, and tool-calling workflows that benefit from a sizable working window. The single routing path means failover is limited compared with multi-provider listings, and developers should treat the Requesty-specific price point as distinct from the related QwenCloud listing, since the two SKUs carry different rates despite the shared Qwen lineage.

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Quick Info

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Provider
Requesty
Model key
qwen3.8-flash-next
Release date
Aug 27, 2026
Last updated
Aug 27, 2026
Input modalities
Output modalities
Capabilities

Cost

Input token cost
$0.20
Output token cost
$0.50

Limits

Output tokens
262,144 tokens
Context window
262,144 tokens

Transparent token rates

Compare Qwen3.8 Flash Next pricing

Rates are shown per one million tokens. Combined means one million input plus one million output tokens.

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Latest news about Qwen3.8 Flash Next

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Coverage

IntuitionLabs' September 5, 2026 analysis confirms Qwen3.8-Flash-Next as an open-weight, multimodal Mixture-of-Experts model from Alibaba's Qwen team, released August 26, 2026, positioned as an experimental preview of the Qwen4 architecture rather than a conventional production model. The 125B backbone with 6B activate The 51B-parameter n-gram table can be offloaded to host RAM, making memory planning dependent on both accelerator and host capacity. The official FP8 checkpoint at 172.78 GiB is a weight-storage figure, not a complete GPU-serving memory requirement; runtime and KV-cache headroom must be planned separately. The vLLM rec

Requesty

Coverage

An NVIDIA developer-forum thread documents a community run recipe for Qwen3.8-Flash-Next on a single DGX Spark GB10 device, dated August 31, 2026. The author forked from a prior Qwen 3.5 122B recipe and applied an uncalibrated int8 quantization of the lm_head alongside an uncalibrated FP8 quantization of the Gated Delt Reported throughput includes vLLM prompt processing at approximately 2000 tok/s, with llama-benchy peak text generation at mtp=3 reaching 41.33 tok/s at concurrency 1, 152.67 tok/s at concurrency 8, and 239.33 tok/s at concurrency 16. At depth 32768, throughput is 45.33 tok/s at c=1, 122.33 tok/s at c=8, and 138.33 tok

Requesty

CoverageBenchmark

Benjamin Marie's Kaitchup review describes Qwen3.8-Flash-Next as a multimodal Mixture-of-Experts model with a 125B-parameter main model, only 6B parameters activated per token, plus 51B parameters dedicated to a new n-gram embedding system and a 4B MTP module for speculative decoding. The Transformers configuration fil The review outlines plans to compare Qwen3.8-Flash-Next against Qwen3.8 27B, then dive into the Qwen Sparse Attention, Gated Residual, and 51B-parameter n-gram embedding table internals. It will also estimate actual memory consumption at 256K context, evaluate NVFP4 and Unsloth's GGUF quantizations, and assess what har

Requesty

CoveragePreview

Local AI Zone's technical deep-dive describes Qwen3.8-Flash-Next as the second-generation "Next" architecture preview from Alibaba's Qwen team, released August 26, 2026 as the open-weight counterpart to the production API SKU qwen3.8-flash. Architecture totals 180B stored parameters with 6B computed per token, arranged Training uses the Muon optimizer for 2D linear maps (Attention, GDN, MoE experts) plus AdamW for embeddings, router, and low-rank Gated Residual parameters, with a refitted scaling law and no batch-size warmup, reportedly saving 18.8% of optimizer steps at 1/9 the training cost of Qwen3.7-Plus. Pricing on DashScope is

Requesty

CoverageBenchmark

DataCamp's article frames Qwen3.8-Flash-Next as an open-weight 125B MoE model with 6B active parameters per token, previewing the Qwen4 architecture and released on August 26, 2026, the same day as the GLM-5.3 Flash launch. Pricing on QwenCloud is $0.16 per million input tokens and $0.47 per million output tokens as th The model beats Claude Opus 4.6 Max on SWE-bench Pro (62.5 vs 53.4), CoWorkBench (73.9 vs 68.2), and JobBench (55.7 vs 36.6), but trails Claude Opus 4.6 Max on Humanity's Last Exam (35.9 vs 40.0) and shows reported brittleness on very long agent chains. Native context is 262,144 tokens, extensible to 1,000,000 with YaR

Requesty

CoverageBenchmark

AI Release Tracker catalogs Qwen3.8-Flash-Next as an open-weight model released by Qwen on August 26, 2026, twelve days after Qwen3.8-27B. It confirms 125B total parameters with a 262K-token context window and provides a comprehensive benchmark panel covering IFBench, Agent's Last Exam, SWE-Bench Pro, SWE-Bench Multili Key benchmark scores include SWE-Bench Pro at 62.5% (9th of 23), SWE-Bench Multilingual at 81% (5th of 14), DeepSWE 1.1 at 58.7% (14th of 25), NL2Repo-Bench at 48.1% (4th of 5), LiveCodeBench at 91.9% (2nd of 12), and JobBench at 55.7% (3rd of 8). On Agent's Last Exam the model achieves 24.3% pass@1 and a 51.2% pass@1

Requesty

Coverage

Qwen released Qwen3.8-Flash-Next as an open-weight model on August 26, 2026, positioned as an experimental preview of the architecture that will underpin Qwen4, with weights published on Hugging Face in a Transformers format compatible with vLLM, SGLang, and TokenSpeed. The model card notes that the production-oriented Three architectural innovations are introduced in Qwen3.8-Flash-Next. First, Hybrid Attention with Qwen Sparse Attention (QSA) replaces the previous Gated DeltaNet + Gated Attention pairing by operating at the micro-block level rather than per-token, significantly cutting long-context latency for agentic workloads. Sec

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