Claude Fable 5.1 vs Granite 4.2 3B
Benchmark Performance
Available Benchmarks
Technical Differences
Side-by-Side Facts
| Field | Claude Fable 5.1 | Granite 4.2 3B |
|---|---|---|
| Developer | Anthropic | IBM |
| Family | Claude 5 1 | Granite 4 2 |
| Model | Claude Fable 5.1 | Granite 4.2 3B |
| Version | Claude Fable 5.1 | Granite 4.2 3B |
| Lifecycle | active | active |
| Released | 2026-09-01 | 2026-08-25 |
| Knowledge cutoff | 2026-06-01 | Unknown |
| Input modalities | Text, Image | Text |
| Output modalities | Text | Text |
| Context window | 1,000K | 131K |
| Total parameters | Unknown | 3.7B |
| Active parameters | Unknown | Unknown |
| License | Unknown | apache-2.0 |
| Open weights | No | Yes |
| API available | Yes | Yes |
| Self-hostable | No | Yes |
| Provider access | Anthropic (Standard) | Deepinfra (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, structured_outputs, tools |
14 comparable fields · 11 material differences · Pair passes the primary-source comparison gate
Claude Fable 5.1 Capabilities
Granite 4.2 3B Capabilities
Internal Comparison Graph
Related Comparisons
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|---|---|---|---|
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Primary Evidence
Sources and Freshness
Questions
Claude Fable 5.1 vs Granite 4.2 3B FAQs
Is Claude Fable 5.1 or Granite 4.2 3B better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Fable 5.1 and Granite 4.2 3B, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Fable 5.1 or Granite 4.2 3B?+
Claude Fable 5.1 is $10.00 and Granite 4.2 3B is $0.030 per million tokens, so Granite 4.2 3B is cheaper on this metric. Claude Fable 5.1 is $50.00 and Granite 4.2 3B is $0.12 per million tokens, so Granite 4.2 3B is cheaper on this metric.
Which has a larger context window, Claude Fable 5.1 or Granite 4.2 3B?+
Claude Fable 5.1 has the larger sourced context window. Claude Fable 5.1 supports 1,000K and Granite 4.2 3B supports 131K.
Which performs better in benchmarks, Claude Fable 5.1 or Granite 4.2 3B?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Claude Fable 5.1 or Granite 4.2 3B be self-hosted?+
Granite 4.2 3B is the only model in this pair currently marked as self-hostable. Claude Fable 5.1 is not marked open weight; Granite 4.2 3B is open weight.
Can Claude Fable 5.1 and Granite 4.2 3B understand images?+
Claude Fable 5.1 is documented with image input; Granite 4.2 3B is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Fable 5.1 or Granite 4.2 3B?+
Neither has a larger sourced maximum output. Claude Fable 5.1 is 128K and Granite 4.2 3B is —.
Do Claude Fable 5.1 and Granite 4.2 3B support reasoning and tool use?+
Claude Fable 5.1: reasoning, tool calling, and image input. Granite 4.2 3B: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Fable 5.1 or Granite 4.2 3B?+
Claude Fable 5.1 has 1 sourced provider route; Granite 4.2 3B has 1, a tie.
Which offers better value, Claude Fable 5.1 or Granite 4.2 3B?+
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.