Claude Fable 5.1 vs Gemini 3 Flash: Specs & Benchmark Comparison
| Characteristic | Claude Fable 5.1 | Gemini 3 Flash |
|---|---|---|
| Company | Anthropic | |
| Release Date | September 1, 2026 | December 16, 2025 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 128K | 66K |
| Input Price / 1M | $10.00 | $0.50 |
| Output Price / 1M | $50.00 | $3.00 |
| Average Score | 0.6 | 0.9 |
Verdict
Both models show equal results — the choice depends on your specific use case.
Overall Performance
Both models show comparable average scores: Claude Fable 5.1 — 0.6, Gemini 3 Flash — 0.9.
API Cost
Gemini 3 Flash is 17.1x cheaper: input $0.50/1M vs $10.00/1M tokens.
Context Window
Same context size: 1M tokens.
Recency
Claude Fable 5.1 is newer: released 9/1/2026 vs 12/16/2025.
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Frequently Asked Questions
Which is better for coding — Claude Fable 5.1 or Gemini 3 Flash?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Claude Fable 5.1 or Gemini 3 Flash?
Gemini 3 Flash is cheaper for input: $0.50 per 1M tokens vs $10.00.
Which has a larger context window — Claude Fable 5.1 or Gemini 3 Flash?
Claude Fable 5.1 supports a larger context: 1,048,576 tokens vs 1,048,576.
The Claude Fable 5.1 and Gemini 3 Flash comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Fable 5.1 or Gemini 3 Flash page. See also the complete list of AI model comparisons.