Qwen3.5 397B A17B vs Claude Fable 5.1
Benchmark Performance
Available Benchmarks
Technical Differences
Side-by-Side Facts
| Field | Qwen3.5-397B-A17B | Claude Fable 5.1 |
|---|---|---|
| Developer | Qwen | Anthropic |
| Family | Qwen3 5 397b A17b | Claude 5 1 |
| Model | Qwen3.5-397B-A17B | Claude Fable 5.1 |
| Version | Qwen3.5-397B-A17B | Claude Fable 5.1 |
| Lifecycle | active | active |
| Released | 2026-02-15 | 2026-09-01 |
| Knowledge cutoff | Unknown | 2026-06-01 |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
| Context window | 262K | 1,000K |
| Total parameters | 403.4B | Unknown |
| Active parameters | 17B | Unknown |
| License | apache-2.0 | Unknown |
| Open weights | Yes | No |
| API available | Yes | Yes |
| Self-hostable | Yes | No |
| Provider access | Deepinfra (Standard), Hugging Face (Standard), Openrouter (Standard), Together Ai (Standard) | Anthropic (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, tools |
14 comparable fields · 9 material differences · Pair passes the primary-source comparison gate
Qwen3.5 397B A17B Capabilities
Claude Fable 5.1 Capabilities
Internal Comparison Graph
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Primary Evidence
Sources and Freshness
Questions
Qwen3.5 397B A17B vs Claude Fable 5.1 FAQs
Is Qwen3.5 397B A17B or Claude Fable 5.1 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Qwen3.5 397B A17B and Claude Fable 5.1, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Qwen3.5 397B A17B or Claude Fable 5.1?+
Qwen3.5 397B A17B is $0.45 and Claude Fable 5.1 is $10.00 per million tokens, so Qwen3.5 397B A17B is cheaper on this metric. Qwen3.5 397B A17B is $3.00 and Claude Fable 5.1 is $50.00 per million tokens, so Qwen3.5 397B A17B is cheaper on this metric.
Which has a larger context window, Qwen3.5 397B A17B or Claude Fable 5.1?+
Claude Fable 5.1 has the larger sourced context window. Qwen3.5 397B A17B supports 262K and Claude Fable 5.1 supports 1,000K.
Which performs better in benchmarks, Qwen3.5 397B A17B or Claude Fable 5.1?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Qwen3.5 397B A17B or Claude Fable 5.1 be self-hosted?+
Qwen3.5 397B A17B is the only model in this pair currently marked as self-hostable. Qwen3.5 397B A17B is open weight; Claude Fable 5.1 is not marked open weight.
Can Qwen3.5 397B A17B and Claude Fable 5.1 understand images?+
Qwen3.5 397B A17B is documented with image input; Claude Fable 5.1 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Qwen3.5 397B A17B or Claude Fable 5.1?+
Neither has a larger sourced maximum output. Qwen3.5 397B A17B is — and Claude Fable 5.1 is 128K.
Do Qwen3.5 397B A17B and Claude Fable 5.1 support reasoning and tool use?+
Qwen3.5 397B A17B: reasoning, tool calling, and image input. Claude Fable 5.1: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Qwen3.5 397B A17B or Claude Fable 5.1?+
Qwen3.5 397B A17B has 4 sourced provider routes; Claude Fable 5.1 has 1, so Qwen3.5 397B A17B has broader tracked availability.
Which offers better value, Qwen3.5 397B A17B or Claude Fable 5.1?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.