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Qwen3.5 9B Base

Thinking MachinesOpen weights

Qwen3.5 9B Base by Thinking Machines costs $0.30 per 1M input tokens and $0.81 per 1M output tokens, with a 66K-token context window.

Pricing

Input (per 1M tokens)
$0.30
Output (per 1M tokens)
$0.81
Cached input (per 1M)
$0.06

Specifications

Provider
Thinking Machines
Context window
66K tokens
Parameters
—
Released
Feb 2026
Open weights
Yes
Frontier model
No

Compare Qwen3.5 9B Base with…

Qwen3.5 9B Base vs DeepSeek V4 Pro$0.80/1MQwen3.5 9B Base vs Trinity Large Thinking$0.80/1MQwen3.5 9B Base vs Llama 3.1 70B$0.80/1MQwen3.5 9B Base vs Qwen 2.5 Coder 32B$0.79/1MQwen3.5 9B Base vs Qwen-Plus$0.78/1MQwen3.5 9B Base vs Llama 4 Scout 17B 16E Instruct$0.78/1M

FAQ

How much does Qwen3.5 9B Base cost?

Qwen3.5 9B Base is priced at $0.30 per 1M input tokens and $0.81 per 1M output tokens. Output tokens cost more than input.

What is Qwen3.5 9B Base's context window?

Qwen3.5 9B Base supports a context window of 66K tokens — the maximum prompt plus response length it can handle in a single request.

Is Qwen3.5 9B Base open weight?

Yes — Qwen3.5 9B Base has openly available weights.

Data as of 2026-10-21. Source: models.dev (open). Pricing is per 1M tokens (USD); confirm with the provider before production use.