Qwen3.5 397B A17B (Reasoning) logo
Alibaba
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Qwen3.5 397B A17B

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Open weights model

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Released February 2026

Qwen3.5 397B A17B (Reasoning) API Provider Benchmarking & Analysis

Model Comparison

Analysis of API providers for Qwen3.5 397B A17B (Reasoning) across performance metrics including latency (time to first token), output speed (output tokens per second), price and others. API providers benchmarked include Clarifai, Alibaba Cloud, Wafer, Parasail, SiliconFlow (FP8), DeepInfra (FP8), DigitalOcean, GMI (FP8), Nebius (Base, FP4), and Novita.

Fastest

#1
Nebius (Base, FP4)Nebius (Base, FP4)
119.0 t/s
#2
SiliconFlow (FP8)SiliconFlow (FP8)
85.6 t/s
#3
WaferWafer
85.2 t/s
#4
Alibaba CloudAlibaba Cloud
82.8 t/s
#5
NovitaNovita
82.2 t/s

Output speed

Total 10 providers

Lowest Latency

#1
Nebius (Base, FP4)Nebius (Base, FP4)
28.81 s
#2
WaferWafer
39.62 s
#3
SiliconFlow (FP8)SiliconFlow (FP8)
39.67 s
#4
NovitaNovita
40.19 s
#5
Alibaba CloudAlibaba Cloud
40.60 s

Time to first answer token

Total 10 providers

Lowest Price

#1
DigitalOceanDigitalOcean
$0.33
#2
WaferWafer
$0.37
#3
DeepInfra (FP8)DeepInfra (FP8)
$0.54
#4
SiliconFlow (FP8)SiliconFlow (FP8)
$0.58
#5
ParasailParasail
$0.67

Blended price (per 1M tokens)

Total 10 providers

Qwen3.5 397B A17B is available through 10 API providers, each offering different performance characteristics and pricing. Below is a comparison of the key metrics across providers.

  • For output speed, the top providers are Nebius (Base, FP4) (119.0 t/s), SiliconFlow (FP8) (85.6 t/s), and Wafer (85.2 t/s). Speed varies significantly across providers, with a 1230% difference between the fastest and slowest.
  • For latency, Nebius (Base, FP4) (28.81s), Wafer (39.62s), and SiliconFlow (FP8) (39.67s) offer the lowest time to first answer token.
  • For pricing, DigitalOcean (0.33), Wafer (0.37), and DeepInfra (FP8) (0.54) offer the lowest blended prices per 1M tokens. Prices vary up to 2.7x across providers.
  • Nebius (Base, FP4) offers the best performance with both the highest speed and lowest latency. For cost optimization, DigitalOcean provides the most competitive pricing.

Highlights

Speed

Output tokens per second · Higher is better

End-to-End Response Time

Seconds · Lower is better

Price

USD per 1M tokens (blended) · Lower is better

Update: Default performance benchmarking workload has updated to 10k input tokens to better reflect production use cases. You can still select different workloads above.

Pricing

Pricing: Cache Hit, Input, and Output

Price (USD per M Tokens) · Lower is better · 10,000 input tokens

Price per token for cached prompts (previously processed), typically offering a significant discount compared to regular input price, represented as USD per million tokens. The values shown here are the cache hit price; cache write and cache storage are billed separately and vary by provider — see "Cache pricing by provider" for detail.

Pricing: Blended Price

Blended at 7:2:1 (cache-input-output) · USD per 1M tokens (blended) · Lower is better

Price per token, shown in USD per million tokens. Price is a blend of cache hit, input, and output token prices using the selected ratio (default 7:2:1 cache-input-output).

Pricing: Cache Discount

1 - (cache hit price / input price) · Higher is better

Reduction in input token cost due to cache hit relative to input price. Formula: 1 - (Cache Hit Price per Token / Input Token Price), where cache hit price is the first-party cache hit price or the median provider cache hit price. Note that this discount figure does not account for all costs associated with cache hits, such as cache write and storage costs.

Output Speed vs. Price

Blended at 7:2:1 (cache-input-output) · Output speed: output tokens per second · USD per 1M tokens (blended)
Most attractive quadrant
Pareto line

Tokens per second received while the model is generating tokens (ie. after first chunk has been received from the API for models which support streaming).

Speed

Measured by Output Speed (tokens per second)

Output Speed: Qwen3.5 397B A17B (Reasoning)

Output speed: output tokens per second · 10,000 input tokens

Tokens per second received while the model is generating tokens (ie. after first chunk has been received from the API for models which support streaming).

Figures represent performance of the model's first-party API (e.g. OpenAI for o1) or the median across providers where a first-party API is not available (e.g. Meta's Llama models).

Latency vs. Output Speed

Latency: seconds to first token received · Output speed: output tokens per second · 10,000 input tokens
Most attractive quadrant
Pareto line

Tokens per second received while the model is generating tokens (ie. after first chunk has been received from the API for models which support streaming).

Latency

Measured by Time (seconds) to First Token

Time to First Answer Token

Seconds to first token received · Lower is better · 10,000 input tokens

Time to first answer token received, in seconds, after API request sent. For reasoning models, this includes the 'thinking' time of the model before providing an answer. For models which do not support streaming, this represents time to receive the completion.

Figures represent median (P50) measurement over the past 72 hours to reflect sustained changes in performance.

End-to-End Response Time

Seconds to output 500 tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed

End-to-End Response Time

Seconds to output 500 tokens, including reasoning model 'thinking' time · Lower is better · 10,000 input tokens

Seconds to receive a 500 token response. Key components:

  • Input time: Time to receive the first response token
  • Thinking time (only for reasoning models): Time reasoning models spend outputting tokens to reason prior to providing an answer. Amount of tokens based on the average reasoning tokens across a diverse set of 60 prompts (methodology details).
  • Answer time: Time to generate 500 output tokens, based on output speed

Key Comparison Metrics & API Features

Clarifai logoClarifai
256k
Open
$0.36
--
--
--
--
Alibaba Cloud logoAlibaba Cloud
262k
Open
$0.36
83
2.11
46.64
38.48
Wafer logoWafer
262k
Open
$0.12
85
2.23
45.49
37.39
Parasail logoParasail
262k
Open
$0.23
67
1.14
56.25
47.64
SiliconFlow logoSiliconFlow
262k
Open
$0.23
86
2.44
45.51
37.23
DeepInfra logoDeepInfra
262k
Open
$0.19
42
1.17
88.74
75.69
DigitalOcean logoDigitalOcean
262k
Open
$0.10
9
2.21
414.09
356.01
GMI logoGMI
262k
Open
$0.36
--
--
--
--
Nebius logoNebius
262k
Open
$0.36
119
2.04
33.01
26.77
Novita logoNovita
262k
Open
$0.36
82
1.45
46.27
38.74

Frequently Asked Questions

Common questions about Qwen3.5 397B A17B (Reasoning) providers

Qwen3.5 397B A17B (Reasoning) is available through 10 API providers: Clarifai, Alibaba Cloud, Wafer, Parasail, SiliconFlow (FP8), DeepInfra (FP8), DigitalOcean, GMI (FP8), Nebius (Base, FP4), and Novita. Each provider offers different performance characteristics and pricing.

Qwen3.5 397B A17B (Reasoning) is currently available through 10 API providers that we benchmark and track.

The fastest providers for Qwen3.5 397B A17B (Reasoning) by output speed are Nebius (Base, FP4) (119.0 t/s), SiliconFlow (FP8) (85.6 t/s), and Wafer (85.2 t/s). Output speed measures how quickly tokens are generated after the model starts responding.

The providers with the lowest time to first answer token for Qwen3.5 397B A17B (Reasoning) are Nebius (Base, FP4) (28.81s), Wafer (39.62s), and SiliconFlow (FP8) (39.67s). Lower latency means faster initial response time.

The most affordable providers for Qwen3.5 397B A17B (Reasoning) by blended price are DigitalOcean ($0.33 per 1M tokens), Wafer ($0.37 per 1M tokens), and DeepInfra (FP8) ($0.54 per 1M tokens). Blended price uses a 7:2:1 cache hit/input/output token ratio.

The providers with the lowest input token pricing for Qwen3.5 397B A17B (Reasoning) are DigitalOcean ($0.30 per 1M input tokens), SiliconFlow (FP8) ($0.39 per 1M input tokens), and Wafer ($0.43 per 1M input tokens).

The providers with the lowest output token pricing for Qwen3.5 397B A17B (Reasoning) are DigitalOcean ($1.93 per 1M output tokens), SiliconFlow (FP8) ($2.34 per 1M output tokens), and Wafer ($2.60 per 1M output tokens).

Prices for Qwen3.5 397B A17B (Reasoning) vary up to 2.7x across providers. The most affordable is DigitalOcean at $0.33 per 1M tokens, while Clarifai charges $0.90 per 1M tokens.

Output speed for Qwen3.5 397B A17B (Reasoning) varies significantly across providers. Nebius (Base, FP4) is the fastest at 119.0 t/s, which is 13.3x faster than DigitalOcean at 8.9 t/s.

All 10 providers of Qwen3.5 397B A17B (Reasoning) support JSON mode for structured output.

All 10 providers of Qwen3.5 397B A17B (Reasoning) support function calling (tool use).

For Qwen3.5 397B A17B (Reasoning), Nebius (Base, FP4) offers the best performance with highest speed and lowest latency. For cost optimization, DigitalOcean provides the most competitive pricing.

When choosing a provider for Qwen3.5 397B A17B (Reasoning), consider: output speed (for throughput-intensive tasks), latency (for interactive applications requiring quick first responses), pricing (for cost-sensitive workloads), and API features like JSON mode or function calling.

Yes, provider performance can vary over time due to infrastructure changes, load balancing, and updates. We continuously benchmark all providers and display historical performance trends in the "Over Time" charts.

For information about Qwen3.5 397B A17B (Reasoning)'s intelligence, capabilities, modalities, and how it compares to other models, see the model overview page. View model overview