Qwen3.8 Flash vs Claude Fable 5.1: price, context window and capabilities
Qwen3.8 Flash (qwen/qwen3.8-flash) from Qwen and Claude Fable 5.1 (anthropic/claude-fable-5.1) from Anthropic are both multimodal language models on the OceanToken API. Qwen3.8 Flash costs less per token than Claude Fable 5.1: $0.143 against $9.00 per 1M input tokens (98% less) and $0.447 against $45.00 per 1M output tokens (99% less). Claude Fable 5.1 is 10% off its official price on OceanToken, for every account. Claude Fable 5.1 has the larger context window: 1M tokens (1,000,000) against 984K (983,616) for Qwen3.8 Flash. Both support tool calling, reasoning, structured outputs and image input; only Qwen3.8 Flash also lists video input; only Claude Fable 5.1 also lists file input.
Side by side
| Spec | Qwen3.8 Flash −25% | Claude Fable 5.1 −10% |
|---|---|---|
| Model | Qwen3.8 Flashqwen/ | Claude Fable 5.1anthropic/ |
| Publisher | Qwen | Anthropic |
| Kind | Text, vision & video | Text & vision |
| Context window | 984K tokens983,616 | 1M tokens1,000,000 |
| Input price | $0.143 / 1M tokens | $9.00 / 1M tokens |
| Output price | $0.447 / 1M tokens | $45.00 / 1M tokens |
| Cached input price | $0.016 / 1M tokens | $0.25 / 1M tokens |
| Cache write price | $0.20 / 1M tokens | $12.50 / 1M tokens |
| Web search price | – | $0.01 / search |
| Discount (vs official, top tier) | −25% | −10% |
| Inputs | text, images and video | text, images and files |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose Qwen3.8 Flash to spend less per token: 98% less for input and 99% less for output than Claude Fable 5.1.
- Choose Claude Fable 5.1 for the longest inputs: its context window holds 1M tokens against 984K for Qwen3.8 Flash.
- Choose Qwen3.8 Flash if you need video input: Claude Fable 5.1 does not list it.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key Qwen3.8 Flash Claude Fable 5.1
Frequently asked questions
Which is cheaper, Qwen3.8 Flash or Claude Fable 5.1?
Qwen3.8 Flash. Qwen3.8 Flash costs less per token than Claude Fable 5.1: $0.143 against $9.00 per 1M input tokens (98% less) and $0.447 against $45.00 per 1M output tokens (99% less). Claude Fable 5.1 is 10% off its official price on OceanToken, for every account. The OceanToken console always shows the current price.
Which has the larger context window, Qwen3.8 Flash or Claude Fable 5.1?
Claude Fable 5.1. Claude Fable 5.1 has the larger context window: 1M tokens (1,000,000) against 984K (983,616) for Qwen3.8 Flash.
Can I call both Qwen3.8 Flash and Claude Fable 5.1 with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id qwen/qwen3.8-flash or anthropic/claude-fable-5.1.
Models and publishers
Qwen3.8 Flash · Claude Fable 5.1 · All Qwen models · All Anthropic models
More comparisons
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