Model comparison
Compare Claude Opus 5 and Qwen3.8-Flash using the same provider-sourced text & reasoning rubric. No mystery score and no invented benchmark ranking.
Facts checked September 14, 2026
Set your usage. Your estimate updates as you type.
Example: 6,000 input tokens for 10 pages, plus a 500-token summary. Page lengths vary; adjust the numbers below.
One run sends your input to the model once and receives an answer. Tokens are pieces of text: input is what you send, output is the answer you receive.
Estimates exclude taxes, tools, cache storage/writes, free allowances and custom discounts. Image estimates cover output only, not prompt or reference-image charges. Quality modes differ by model. Unlisted settings are not treated as free.
| Model | Access | Estimated total (USD) |
|---|---|---|
| Claude Opus 5Anthropic | Anthropic | $0.0425 |
| Qwen3.8-FlashQwen | Qwen | No reviewed rate |
Quick take
A Claude model for substantial code changes, reasoning and business workflows with many steps.
Thinking is on by default. Reasoning effort and longer answers affect both cost and response time.
Alibaba's efficient million-context multimodal model for fast agents, coding, document work, vision, video understanding, and tool use.
Knowledge cutoff is not published, and regional Model Studio terms can differ from other Qwen gateways. Confirm the exact endpoint, long-context pricing, output limit, logging, and retention settings.
Compare the published facts
Values use each provider's own published units and limits. A blank means the provider did not publish a directly comparable value in the sources reviewed.
| Text & reasoning | Claude Opus 5 | Qwen3.8-Flash |
|---|---|---|
| Context windowMaximum combined prompt and working context documented by the provider. | 1M tokens | Up to 1M tokens through Model Studio |
| Maximum outputProvider-published response limit, where available. | 128K tokens | Up to 131,072 tokens |
| Knowledge cutoffLatest reliable knowledge date explicitly published by the model provider. Search and connected tools can retrieve newer information but do not change the model's built-in cutoff. | May 2026 | Not published |
| Input priceCurrent standard list price per million input tokens unless noted. | $5 / 1M | $0.113 / 1M tokens |
| Output priceCurrent standard list price per million output tokens unless noted. | $25 / 1M | $0.382 / 1M tokens |
| InputsMedia types accepted by the listed model endpoint. | Text, image | Text, image, video |
| Tools & agentsSelected native tools and agent-building capabilities, not an exhaustive list. | Tool use, agents, vision, coding workflows | Function calling, web search, structured output, tools |
How to choose
Start with the job you need to complete, then validate cost, access, and policy details on your exact provider route.
Anthropic does not train on API data without express permission. Retention depends on the API feature, account agreement and cloud provider.
Provider and API links
Alibaba's public model page should be read together with the selected Model Studio region and account terms. Do not assume another Qwen gateway's retention or training setting applies to the Alibaba Cloud route.
Frequently asked questions
Claude Opus 5: A Claude model for substantial code changes, reasoning and business workflows with many steps. Qwen3.8-Flash: Alibaba's efficient million-context multimodal model for fast agents, coding, document work, vision, video understanding, and tool use.
Consider Claude Opus 5 when your priority is Codebase changes. Consider Qwen3.8-Flash when your priority is Cost-sensitive multimodal agents. Test both with your own data and provider route before committing.
No. This comparison aligns provider-published facts for the Text & reasoning category. It does not claim a universal winner or combine incompatible third-party benchmark scores.
