Qwen3.5 Plus 2026-04-20
by Alibaba (Qwen) · qwen/qwen3.5-plus-20260420 · #144 cheapest of 325 paid models
Prices updated Jul 22, 2026, 1:34 AM UTC · refreshed hourly
Qwen3.5 Plus (April 2026) is a large-scale multimodal language model from Alibaba. It accepts text, image, and video input and produces text output, with a 1M token context window. This...
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Pricing
Input
$0.30
per 1M tokens
Output
$1.80
per 1M tokens
Blended (3:1)
$0.675
3 input : 1 output
Cache read
—
per 1M cached tokens
Cache write
$0.375
per 1M tokens
Cache & batch economics
Effective prices for Qwen3.5 Plus 2026-04-20 (no cache-read rate published — hits billed as normal input).
| Cache hit rate | Effective blended $/1M | Example request* | vs no cache |
|---|---|---|---|
| 0% | $0.675 | $0.0324 | — |
| 50% | $0.675 | $0.0324 | −0% |
| 90% | $0.675 | $0.0324 | −0% |
*Example: 100K sticky context + 2K new input + 1K output. Batch discount is an approximate 50% off list rates (available for OpenAI / Anthropic / Google — not flagged for this creator). Confirm on the vendor’s pricing page.
What a request costs
| Workload | Input tokens | Output tokens | Cost / request | Cost / 1K requests |
|---|---|---|---|---|
| Short chat message | 500 | 300 | $0.00069 | $0.69 |
| Document summary | 8,000 | 1,000 | $0.0042 | $4.20 |
| Codebase question (RAG) | 30,000 | 2,000 | $0.0126 | $12.60 |
| Long-context analysis | 150,000 | 5,000 | $0.054 | $54.00 |
Specs
Context window
1M
tokens
Max output
66K
tokens
Input modalities
text, image, video
Tokenizer
Qwen3