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Model comparison · Updated 10 Oct 2026

Devstral 2 2512 vs Qwen3.5 397B A17B

Devstral 2 2512 is about 1.4× cheaper on input ($0.40 against $0.55 per 1M tokens) and on output. Both have a 262K-token context window. For a support chatbot at 10,000 chats a day, the standard-tier bill is about $360 a month for Devstral 2 2512 and $563 for Qwen3.5 397B A17B.

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ModelsAtlas. “Devstral 2 2512 vs Qwen3.5 397B A17B”. Retrieved 10 Oct 2026. https://modelsatlas.com/compare/mistralai/devstral/vs/qwen/3-5-397b-a17b

Model A

Devstral 2 2512

by Mistral AI · weights not marked open · GRIDD4

Input / 1M
$0.40
observed We measured
Source
Our catalogue
Retrieved
1 Sep 2026
Output / 1M$2.00
Context262K
vs

Model B

Qwen3.5 397B A17B

by Qwen (Alibaba) · weights not marked open · GRIDD4

Input / 1M
$0.55
observed We measured
Source
Our catalogue
Retrieved
10 Oct 2026
Output / 1M$3.50
Context262K

Key numbers

Standard tier · highlighted = better

Devstral 2 2512
Qwen3.5 397B A17B
Input / 1M tokens
$0.40
$0.55
Output / 1M tokens
$2.00
$3.50
Batch input / output
Not listed
Not listed
Context window
262,144
262,144
Input types
Not disclosed
Not disclosed
Weights
Not marked open
Not marked open
Tiers listed
standard
standard
Prices checked
2026-09-01
2026-10-10

What it costs for real workloads

Monthly, standard tier, 30 days

Support chatbot10k chats/day · 1.5k in, 300 out
$360/mo
$563/mo
RAG over documents2k queries/day · 12k in, 500 out
$348/mo
$501/mo
Coding agent300 tasks/day · 60k in, 8k out
$360/mo
$549/mo

Devstral 2 2512   Qwen3.5 397B A17B · Derived from the standard-tier prices above, input and output tokens per request as stated, 30 days. Excludes caching discounts and batch. Try your own numbers.

On the atlas

Price band (A–H) × context band (1–6)

Same square. Devstral 2 2512 and Qwen3.5 397B A17B share D4.

Same square as Devstral 2 2512: Qwen3 Coder 480B A35B ($0.30), Qwen3.6 27B ($0.32). Open D4

AFreeB<$0.10C$0.10–0.30D$0.30–1E$1–3F$3–10G$10–30H$30+1<32K232–128K3128–256K4256K–1M51M6>1MINPUT PRICE PER 1M TOKENS →CONTEXT WINDOW ↑ · position within a square follows the real valueQwen3.6 27B · D4Qwen3 Coder 480B A35B · D4Llama 3.1 70B Instruct · D3Mistral Medium 3 · D3Mistral Medium 3.1 · D3MiniMax M1 · D5Nano Banana 2 (Gemini 3.1 Flash Image) · D3Gemini 3 Flash Preview · D5Devstral 2 2512Devstral 2 2512Qwen3.5 397B A17BQwen3.5 397B A17B
Devstral 2 2512Qwen3.5 397B A17BNearest neighboursOpen weights
View the map as a table (3 squares)
SquarePrice bandContext bandModels
GRIDD3$0.30–1128–256KLlama 3.1 70B Instruct, Mistral Medium 3, Mistral Medium 3.1, Nano Banana 2 (Gemini 3.1 Flash Image)
GRIDD4$0.30–1256K–1MDevstral 2 2512, Qwen3.5 397B A17B, Qwen3.6 27B, Qwen3 Coder 480B A35B
GRIDD5$0.30–11MMiniMax M1, Gemini 3 Flash Preview

Capabilities side by side

Only what our records list

Devstral 2 2512
Qwen3.5 397B A17B
Vision input
Not disclosed
Not disclosed
Audio input
Not disclosed
Not disclosed
Open weights
Not marked open
Not marked open
Batch tier
Not listed
Not listed
Free tier
Not listed
Not listed
Thinking tier
Not listed
Not listed

Neither record lists input types, so we do not claim any.

Which should you choose?

Editorial

Choose Devstral 2 2512 if…

  • you pay by the token: it costs $0.40 per 1M input against $0.55
  • output dominates your bill: $2.00 per 1M output against $3.50

Choose Qwen3.5 397B A17B if…

Nothing in the recorded numbers favours Qwen3.5 397B A17B over Devstral 2 2512. Pick it for what our records do not cover — your own tests, or an account you already have with Qwen (Alibaba).

Each reason is a fact from the tables above. Picking between them is our judgement, and we do not benchmark quality: price and context are what we can measure, so test both on your own prompts before you commit.

Questions

Is Devstral 2 2512 better than Qwen3.5 397B A17B?
We do not benchmark quality, so we cannot say. On the recorded numbers: Devstral 2 2512 is about 1.4× cheaper on input ($0.40 against $0.55 per 1M tokens) and on output. Both have a 262K-token context window. For a support chatbot at 10,000 chats a day, the standard-tier bill is about $360 a month for Devstral 2 2512 and $563 for Qwen3.5 397B A17B. Which is better for you depends on your task; test both on your own prompts.
Which is cheaper, Devstral 2 2512 or Qwen3.5 397B A17B?
Devstral 2 2512: $0.40 against $0.55 per 1M input tokens, and $2.00 against $3.50 per 1M output, on standard pricing.
How much does each cost per 1M tokens?
Devstral 2 2512: $0.40 input and $2.00 output. Qwen3.5 397B A17B: $0.55 input and $3.50 output. Standard tier, USD.
Which has the larger context window?
Neither: both have 262,144 tokens.
Do both offer batch pricing?
Neither lists a batch tier in our catalogue.
Can both read images or audio?
Input types recorded for Devstral 2 2512: none recorded. For Qwen3.5 397B A17B: none recorded. Where a record lists none we say so rather than guess; check each vendor's documentation before relying on a capability.
Is either model open-weight?
Devstral 2 2512: not marked open-weight in our records. Qwen3.5 397B A17B: not marked open-weight in our records.
What would each cost for a support chatbot?
At 10,000 chats a day, 1,500 input and 300 output tokens each, 30 days, standard tier: about $360 a month for Devstral 2 2512 and $563 for Qwen3.5 397B A17B. This is our calculation from the listed prices, not a quote.

About the two models

Devstral 2 2512

By Mistral AI. $0.40 input and $2.00 output per 1M tokens, 262K context, atlas square D4. Tiers listed: standard.

Full specs & pricing →

Qwen3.5 397B A17B

By Qwen (Alibaba). $0.55 input and $3.50 output per 1M tokens, 262K context, atlas square D4. Tiers listed: standard.

Full specs & pricing →

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