qwen3.5-plus

Reasoning tokens are billed as output on qwen3.5-plus: $2.4000 per 1M tokens for inputs up to 256,000 tokens, and $3.0000 per 1M tokens above that. They are generated before the visible answer and count toward both latency and spend, so a higher reasoning setting costs more even when the final answer is short.

The current model record does not publish a numeric rate limit for qwen3.5-plus. Confirm the quota for your plan in the console, then run a short load test at your expected concurrency to establish the effective ceiling before production.

Before switching production traffic to qwen3.5-plus, run a pilot on a representative slice of your traffic and check output quality, latency at peak concurrency, and cost per request. Verify the error and retry behaviour, and confirm the request limits you depend on match your plan.

qwen3.5-plus is a reasoning model. Reasoning effort can be tuned per request. Lower effort settings cut reasoning tokens and cost for routine work; reserve higher settings for problems that need deeper search. Measure quality at two or three settings before fixing one in production.

qwen3.5-plus is billed per use and the record publishes no free-tier allowance. The published rates are: for inputs up to 256,000 tokens, input $0.4000 and output $2.4000 per 1M tokens; above that, input $0.5000 and output $3.0000 per 1M tokens. Trial credit or promotional quota is tied to your account rather than to the model, so check the console before planning around a free tier.