Qwen3.5 4B by Alibaba: compact 4B multimodal model with image-text processing and reasoning for efficient deployment.
Available on
Pricing from$0.03/ 1M input$0.07/ 1M output$0.02/ 1M cache read262Kcontext
Privacy
- ZDR
- Training
- No
- Region
- US, Multi
Run Aider on Qwen3.5 4B
Aider is the original open-source AI pair programming tool for the terminal. It maps your whole git repository, edits files across the codebase, and commits as it goes, so every change stays under version control. It talks to any OpenAI-compatible endpoint, so set its base URL to Opper's gateway and you can run it on any of 700+ models with one key and a choice of region.
RunAideronin
AideroninConnect Aider to Qwen3.5 4B
Set up with agents
Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.
Where you can run it
Qwen3.5 4B runs on the routes below. Route only to EU providers when your data has to stay in Europe. One route also sells priority processing: the same model at another price, picked per request with service_tier. How service tiers work.
| Provider | Region | Zero data retention | Training | Input | Output | Cache read | |
|---|---|---|---|---|---|---|---|
| US | No | $0.03 | $0.15 | Input price | |||
| Multi | No | $0.04 | $0.07 | $0.02 | Not offered on this route |
The model
Run Aider on other models
Step-by-step setup for running Aider on each of these models through Opper.
GPT-6 SolGPT-6 LunaClaude Opus 5.5Grok 4.7MiMo V2.6 ProLing-3.0-flash-FinDeepSeek V4.1 FlashLing-3.0-flash-VLGPT-6 AstraQwen3.8-MaxGemini 3.8 FlashMuse Spark 1.3 ContributorClaude Fable 5.1GLM-5.3-FlashQwen3.8 Flash-NextGLM-5.3Qwen3.8 27BDeepSeek V4 ProGemini 3.7 FlashGrok 4.6Qwen3.8-2.4T-A95BInkling-SmallClaude Opus 5Gemini 3.6 FlashKimi K3GPT-5.6 SolGPT-5.6 TerraGPT-5.6 LunaGrok 4.5Claude Sonnet 5GLM-5.2Kimi K2.7 CodeClaude Fable 5MiniMax M3Claude Opus 4.8Qwen3.7-MaxKimi K2.6Claude Opus 4.7GLM 5.1Gemini 3.1 Pro PreviewClaude Sonnet 4.6GLM 4.7GPT-5Grok 4.20 ReasoningDeepSeek V4 Flash VisionHy4 PreviewQwen3.8 FlashMiniMax H3MiMo V2.6 FlashSCX-coderMAGPiEGreen LGreen RSee all 700+ models
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