Claude Fable 5 vs Gemini 3.7 Flash: Specs & Benchmark Comparison
Claude Fable 5 is developed by Anthropic, while Gemini 3.7 Flash comes from Google. Claude Fable 5 was released in June 2026, and Gemini 3.7 Flash followed 2 months later in August 2026.
The two models share 6 published benchmarks. They split them evenly, 3 to 3. The widest gaps are on AutomationBench, where Gemini 3.7 Flash scores 30.4% against 17.4%; FrontierCode 1.1, where Claude Fable 5 scores 53.5% against 43.6%. Averaged across everything we track, Claude Fable 5 sits at 59.8% and Gemini 3.7 Flash at 59.8%.
Gemini 3.7 Flash is the cheaper API at $0.75 per million input tokens and $3.75 per million output tokens, roughly 13 times cheaper than Claude Fable 5 at $10 and $50. Both accept a context window of about 1M tokens. Both accept text and images as input.
| Characteristic | Claude Fable 5 | Gemini 3.7 Flash |
|---|---|---|
| Company | Anthropic | |
| Release Date | June 9, 2026 | August 13, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 128K | 66K |
| Input Price / 1M | $10.00 | $0.75 |
| Output Price / 1M | $50.00 | $3.75 |
| Average Score | 59.8% | 59.8% |
| Benchmarks | ||
| AutomationBench | 17.4% | 30.4% |
| FrontierCode 1.1 | 53.5% | 43.6% |
| DeepSWE 1.1 | 70.0% | 65.3% |
| GDP.pdf | 29.8% | 34.0% |
| BioMysteryBench | 46.1% | 43.5% |
| Terminal-Bench 2.1 | 84.3% | 85.8% |
Visual Benchmark Comparison
Verdict
Gemini 3.7 Flash leads in 3 out of 4 comparison categories.
Both models show comparable average scores: Claude Fable 5 — 0.6, Gemini 3.7 Flash — 0.6.
Gemini 3.7 Flash is 13.3x cheaper: input $0.75/1M vs $10.00/1M tokens.
Gemini 3.7 Flash supports a larger context: 1M vs 1M tokens.
Gemini 3.7 Flash is newer: released 8/13/2026 vs 6/9/2026.
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Frequently Asked Questions
Which is better for coding — Claude Fable 5 or Gemini 3.7 Flash?
Which model is cheaper — Claude Fable 5 or Gemini 3.7 Flash?
Which has a larger context window — Claude Fable 5 or Gemini 3.7 Flash?
The Claude Fable 5 and Gemini 3.7 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 or Gemini 3.7 Flash page. See also the complete list of AI model comparisons.