Claude Fable 5.2 vs Gemini 3.1 Pro Preview Custom Tools
Price, context window & benchmark comparison
VS
Compare different models
Verdict: Gemini 3.1 Pro Preview Custom Tools is 3.6× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix. Gemini 3.1 Pro Preview Custom Tools has the larger context window (1M vs 1M).
| Claude Fable 5.2 | Gemini 3.1 Pro Preview Custom Tools | |
|---|---|---|
| Input price / 1M | $8.00 | $2.00 |
| Output price / 1M | $40.00 | $12.00 |
| Blended price (3:1) | $16.00 | $4.50 |
| Cached input / 1M | $0.20 | $0.20 |
| Context window | 1M | 1M |
| Max output | 128K | 66K |
| Intelligence index | 64.6 | — |
| Coding index | — | — |
| Providers | 5 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-11-07 | 2026-02-25 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, Claude Fable 5.2 or Gemini 3.1 Pro Preview Custom Tools?
Gemini 3.1 Pro Preview Custom Tools is 3.6× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix.
Claude Fable 5.2 vs Gemini 3.1 Pro Preview Custom Tools: which has a bigger context window?
Claude Fable 5.2: 1,000,000 tokens. Gemini 3.1 Pro Preview Custom Tools: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Claude Fable 5.2 ≈ $36,000, Gemini 3.1 Pro Preview Custom Tools ≈ $10,000.
More comparisons
Claude Fable 5.2 vs Gemini 4 CarbonClaude Fable 5.2 vs Gemini Omni 1.2 FlashClaude Fable 5.2 vs Gemini Omni 1.1 FlashClaude Fable 5.2 vs Hy4Claude Fable 5.2 vs GLM 5.3 FlashX LegalClaude Fable 5.2 vs GPT-6.1 TerraClaude Fable 5.2 vs GPT-6.1 Terra ProClaude Fable 5.2 vs Kimi K3.1 ProClaude Fable 5.2 vs MiniMax M3.1 FlashClaude Fable 5.2 vs DeepSeek V4.1 Flash 1017Claude Fable 5.2 vs Nemotron 3.5 Super VLClaude Fable 5.2 vs Gemini 4 ArgonClaude Fable 5.2 vs Claude Haiku 5.5Claude Fable 5.2 vs Nano Banana 2.1Claude Fable 5.2 vs Mistral Large 4Claude Fable 5.2 vs GPT-6.1 Sol ProGemini 3.1 Pro Preview Custom Tools vs Gemini 4 CarbonGemini 3.1 Pro Preview Custom Tools vs Gemini Omni 1.2 FlashGemini 3.1 Pro Preview Custom Tools vs Gemini Omni 1.1 FlashGemini 3.1 Pro Preview Custom Tools vs Hy4Gemini 3.1 Pro Preview Custom Tools vs GLM 5.3 FlashX LegalGemini 3.1 Pro Preview Custom Tools vs GPT-6.1 TerraGemini 3.1 Pro Preview Custom Tools vs GPT-6.1 Terra ProGemini 3.1 Pro Preview Custom Tools vs Kimi K3.1 Pro