The Known Good Updated 4 Sep 2026 Subscribe
Alibaba ·Open weights (unrestricted) ·Released February 2026·Tracked since 25 Jul 2026

Qwen: Qwen3.5 397B A17B — quality, speed & price analysis

Compare with another model Provider benchmarks Data sources
Quality
unranked
Known Good Index
Speed
#188 of 338
45.0
Output tokens per second
Price
#259 of 442
$1.29
Blended per 1M tokens
In $0.55 · Out $3.50
Cache hit price
#248 of 324
$0.23
per 1M tokens (−59%)
Context
#233 of 476
262k
tokens (~400 pages)
Summary

Qwen: Qwen3.5 397B A17B does not yet carry a Known Good Index score — the index needs at least one science, one mathematics and one coding result. It accepts text, image, video input, outputs text, and supports a 262k-token context window.

Pricing is $0.55 per 1M input tokens (below the $2.07 average) and $3.50 per 1M output (below the $9.51 average). Cached input reads at $0.23 per 1M, a 59% discount on its input price. At 45 tokens per second it sits in the lower middle of the tracked range.

Generated from tracked data on 4 Sep 2026 · how these comparisons are computed →

Technical specifications
ReasoningYes
Input modalitytext, image, video
Output modalitytext
Context window262,144 tokens
Max output235,929 tokens
WeightsOpen weights · Open weights (unrestricted)
Knowledge cutoff
Tool callingYes
Providers12 hosts · compare →
Highlights — where Qwen: Qwen3.5 397B A17B sits
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Models shown

Quality

How Qwen: Qwen3.5 397B A17B compares against every tracked model

Known Good IndexCodingMathematicsReasoning
Known Good Index

Composite of GPQA Diamond, Mock AIME 2024–25, MATH Level 5, SWE-bench Verified, LiveBench, Humanity's Last Exam and Terminal-Bench, normalised 0–100. Scores are ingested from Epoch AI; we do not run these evaluations. This model is not in this ranking: it holds no Known Good Index score.

💡 A lightbulb marks a model its provider publishes as a reasoning model
The Known Good

Quality Breakdown

Qwen: Qwen3.5 397B A17B on each evaluation feeding the index, against the tracked average

Evaluation scores

Bar = Qwen: Qwen3.5 397B A17B · grey marker = average across tracked models · scores ingested from Epoch AI

GPQA Diamond86 / 64
Mock AIME 2024–2589 / 54
The Known Good

Arena Elo

Human preference rating from blind pairwise votes

Text Arena

Elo from blind pairwise votes, ingested from Arena

1438
Elo · 95% CI ±3
#68
of 406 ranked models
73k
votes counted
1441
style-controlled (#80)

Ingested 4 Sep 2026.

The Known Good

Price & Cost

Published API pricing by token type

BlendedInput vs outputQuality per dollar
Blended Price

USD per 1M tokens at a 3:1 input:output blend. Live from OpenRouter, cross-checked against models.dev. Lower is better. Ranked against the 442 models priced above zero, which is the population the chart draws; excludes 29 published at no cost (free and promotional tiers).

The Known Good
We publish blended price rather than cost-per-task. Cost-per-task requires token counts from an evaluation suite we do not run. Blended price is computed from published rates and is fully reproducible — see the pricing methodology.

Context Window

Maximum input tokens accepted

Context windowMax output tokens
Context Window

Maximum input context from provider metadata via models.dev and OpenRouter. Higher is better.

The Known Good

Speed

Mean output throughput across hosting providers, over successful measurements from the last 48 hours

Output speedBy provider

Latency

Time to first token, mean across providers over successful measurements from the last 48 hours

Latency (TTFT)

Seconds to first streamed chunk, mean across tracked providers over successful measurements from the last 48 hours. Derived from OpenRouter endpoint telemetry. Lower is better.

The Known Good

Providers

Hosts serving Qwen: Qwen3.5 397B A17B, with their own price and speed

12 providers
Full provider benchmarks →
ProviderInput $/MOutput $/M BlendedSpeedTTFTContext
GMICloud $0.60 $3.60 $1.35 52 3.9s 262k
Phala $0.55 $3.50 $1.29 52 1.8s 262k
Morph $0.50 $3.50 $1.25 52 0.7s 262k
Alibaba · first party $0.39 $2.34 $0.88 45 1.4s 262k
AtlasCloud $0.55 $3.50 $1.29 43 2.1s 262k
Novita $0.60 $3.60 $1.35 42 1.6s 262k
Parasail $0.50 $3.60 $1.27 38 1.1s 262k
StreamLake $0.60 $3.60 $1.35 38 2.1s 256k
Venice $0.75 $4.50 $1.69 36 2.1s 128k
DeepInfra $0.45 $3.00 $1.09 34 0.9s 262k
DigitalOcean $0.55 $3.50 $1.29 11 1.9s 131k
Chutes $0.45 $3.00 $1.09 262k

Per-host pricing and telemetry from OpenRouter. Speed is output tokens per second; TTFT is time to first token.

The Known Good

History

How price and quality have moved since we began tracking this model

Quality & price over time

Since 25 Jul 2026

Known Good Index
Blended price $1.29 per 1M · observed 4 Sep 2026
Output speed 45 tok/s · observed 4 Sep 2026
Time to first token 1.5s
3 Sep 2026 · price change
Qwen: Qwen3.5 397B A17B price up 47%
Blended 3:1 price moved from $0.88 to $1.29 per 1M tokens (OpenRouter).
26 Aug 2026 · price change
Qwen: Qwen3.5 397B A17B price down 31%
Blended 3:1 price moved from $1.28 to $0.88 per 1M tokens (OpenRouter).
24 Aug 2026 · price change
Qwen: Qwen3.5 397B A17B price up 45%
Blended 3:1 price moved from $0.88 to $1.28 per 1M tokens (OpenRouter).
The Known Good

Comparisons

Head-to-head pages pairing Qwen: Qwen3.5 397B A17B with other tracked models

Head-to-head pages are generated for the top 50 models by Known Good Index, which Qwen: Qwen3.5 397B A17B is not currently in. Its nearest tracked models by index are below.

Browse all comparisons →
Sources for this page
Pricing & providers — OpenRouter Metadata — models.dev Benchmarks — Epoch AI (CC-BY 4.0)Elo — Arena Full attribution →