Model Comparison

V3.1 Terminus (Reasoning)
vs. Qwen3.5 397B A17B (Non-reasoning)

Comparing 2 AI models · 10 benchmarks · DeepSeek, Alibaba

Recommended Pick

Alibaba logo Qwen3.5 397B A17B (Non-reasoning) 11 metric wins

Strongest on: Value, Input price, Blended price

Best Value

Alibaba logo

Qwen3.5 397B A17B (Non-reasoning)

100.0 value score

48.3 reasoning / $1.35/1M

Lowest Price

Alibaba logo

Qwen3.5 397B A17B (Non-reasoning)

$0.60/1M input price

Best Reasoning

DeepSeek logo

V3.1 Terminus (Reasoning)

61.5 reasoning score

Blends available reasoning benchmarks

Best for Coding

Alibaba logo

Qwen3.5 397B A17B (Non-reasoning)

37.4 coding index

Composite Indices

Higher is better; speed and price are normalized

Standard Benchmarks

Only benchmarks with data are shown

Differences That Matter

Best value

Qwen3.5 397B A17B (Non-reasoning) has the strongest quality-to-price mix at 100.0 out of 100 value points.

Price gap

Qwen3.5 397B A17B (Non-reasoning) is 2.7x cheaper on input tokens than V3.1 Terminus (Reasoning).

Reasoning gap

V3.1 Terminus (Reasoning) leads Qwen3.5 397B A17B (Non-reasoning) by 13.2 points on reasoning.

Coding gap

Qwen3.5 397B A17B (Non-reasoning) leads V3.1 Terminus (Reasoning) by 3.7 points on coding.

Top-pick rationale

Qwen3.5 397B A17B (Non-reasoning) wins 11 measurable categories, including Value, Input price, Blended price, Throughput.

Live compare

Response Face-Off

Run one prompt through the selected models and compare response quality with live speed and cost context.

DeepSeek logo

V3.1 Terminus (Reasoning)

DeepSeek

Waiting

TTFT

Time

tok/s

Tokens

Cost

Waiting
Alibaba logo

Qwen3.5 397B A17B (Non-reasoning)

Alibaba

Waiting

TTFT

Time

tok/s

Tokens

Cost

Waiting

Which answer was more useful?

AI Chat

Chat with 80+ models

Inference API

EU-hosted inference

Full Comparison

Metric
DeepSeek logo V3.1 Terminus (Reasoning)
DeepSeek
Top Pick
Alibaba logo Qwen3.5 397B A17B (Non-reasoning)
Alibaba
Pricing per 1M tokens
Input Cost $1.64/1M$0.60/1M
Output Cost $2.75/1M$3.60/1M
Blended (3:1) $1.91/1M$1.35/1M
Specifications
Organization DeepSeekAlibaba
Release Date Sep 22, 2025Feb 16, 2026
Performance & Speed
Throughput 52.9 tok/s
TTFT 1934ms
Latency 1934ms
Composite Indices
Value Score 89.8100.0
Reasoning Score 61.548.3
Intelligence 33.940.1
Coding 33.737.4
Math 89.7
Standard Benchmarks
GPQA 79.2%86.1%
MMLU Pro 85.1%
HLE 15.2%18.8%
LiveCodeBench 79.8%
AIME 2025 89.7%
SciCode 40.6%41.1%
LCR 65.0%58.0%
IFBench 57.0%51.6%
TAU-bench v2 37.1%83.9%
TerminalBench Hard 30.3%35.6%

Key Takeaways

Qwen3.5 397B A17B (Non-reasoning) offers the best value at $0.60/1M, making it ideal for high-volume applications and cost-conscious projects.

V3.1 Terminus (Reasoning) has the strongest reasoning profile with a 61.5 reasoning score, combining the available reasoning-heavy benchmarks.

Qwen3.5 397B A17B (Non-reasoning) reaches a 37.4 coding index, making it the top choice for software development and code generation tasks.

All models support context windows of ∞+ tokens, suitable for processing lengthy documents and maintaining extended conversations.

When to Choose Each Model

DeepSeek logo

V3.1 Terminus (Reasoning)

  • Complex reasoning tasks
  • Research & analysis
Alibaba logo

Qwen3.5 397B A17B (Non-reasoning)

  • Cost-sensitive applications
  • High-volume processing
  • Code generation
  • Software development