Qwen3.8 Max Prime vs Claude Fable 5.1: price, context window and capabilities
Qwen3.8 Max Prime (qwen/qwen3.8-max-prime) 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 Max Prime costs less per token than Claude Fable 5.1: $4.00 against $9.00 per 1M input tokens (56% less) and $12.00 against $45.00 per 1M output tokens (73% 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 Max Prime. Both support tool calling, reasoning, structured outputs and image input; only Qwen3.8 Max Prime also lists video input; only Claude Fable 5.1 also lists file input.
Side by side
| Spec | Qwen3.8 Max Prime | Claude Fable 5.1 −10% |
|---|---|---|
| Model | Qwen3.8 Max Primeqwen/ | Claude Fable 5.1anthropic/ |
| Publisher | Qwen | Anthropic |
| Kind | Text, vision & video | Text & vision |
| Context window | 984K tokens983,616 | 1M tokens1,000,000 |
| Input price | $4.00 / 1M tokens | $9.00 / 1M tokens |
| Output price | $12.00 / 1M tokens | $45.00 / 1M tokens |
| Cached input price | $0.50 / 1M tokens | $0.25 / 1M tokens |
| Cache write price | – | $12.50 / 1M tokens |
| Web search price | – | $0.01 / search |
| Discount (vs official, top tier) | — | −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 Max Prime to spend less per token: 56% less for input and 73% 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 Max Prime.
- Choose Qwen3.8 Max Prime 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 Max Prime Claude Fable 5.1
Frequently asked questions
Which is cheaper, Qwen3.8 Max Prime or Claude Fable 5.1?
Qwen3.8 Max Prime. Qwen3.8 Max Prime costs less per token than Claude Fable 5.1: $4.00 against $9.00 per 1M input tokens (56% less) and $12.00 against $45.00 per 1M output tokens (73% 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 Max Prime 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 Max Prime.
Can I call both Qwen3.8 Max Prime 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-max-prime or anthropic/claude-fable-5.1.
Models and publishers
Qwen3.8 Max Prime · Claude Fable 5.1 · All Qwen models · All Anthropic models
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