text model comparison
Claude Fable 5 vs Gemini 3.5 Flash
Claude Fable 5 and Gemini 3.5 Flash are both current text models, from Anthropic and Google. On Arena Text, Claude Fable 5 scores 1504 Elo and Gemini 3.5 Flash 1478 Elo (Arena, measured October 8, 2026). Both accept about 1.05M tokens of context (1,048,576 and 1,000,000).
Data verified October 12, 2026 · Dataset 2026-10-12
Side by side
Standard-tier prices in effect today. The better value in each row is highlighted.
| Fact | Claude Fable 5 | Gemini 3.5 Flash |
|---|---|---|
| Price per 1M input tokens | $10 | Not reported |
| Price per 1M output tokens | $50 | Not reported |
| Arena Text | 1504 Elo (#2 of 39) (better) | 1478 Elo (#16 of 39) |
| GPQA Diamond | 85.9% (#30 of 37) | 92.8% (#16 of 37) (better) |
| FrontierMath Tiers 1-3 (v2) | 87% (#8 of 37) (better) | 62.8% (#25 of 37) |
| SimpleQA Verified | 70.7% (#6 of 34) (better) | 66.2% (#11 of 34) |
| LiveBench Overall | Not measured | 74.64 points (#5 of 5) |
| Provider | Anthropic | |
| Release date | June 9, 2026 | May 19, 2026 |
| Access | API only | API only |
| Context window | 1,000,000 tokens | 1,048,576 tokens |
| Max output | 128,000 tokens | 65,536 tokens |
| Input | text, image | text, image, audio, video |
| Output | text | text |
Scores:Arena · 2026-10-12Epoch AI · 2026-10-12LiveBench · 2026-06-25
When to choose each
Claude Fable 5
Best for
- Long-horizon coding, reasoning, and knowledge-work evaluations
Watch out for
- Fable requires 30-day data retention, and classifier-triggered requests fall back to Claude Opus 4.8
Gemini 3.5 Flash
Best for
- Long-context multimodal and agentic evaluations
Watch out for
- Exact current token prices are not represented because the approved source set does not establish a single untiered rate
Claude Fable 5 vs Gemini 3.5 Flash FAQ
Which scores higher on independent benchmarks, Claude Fable 5 or Gemini 3.5 Flash?
Claude Fable 5 leads on Arena Text, 1504 Elo to 1478 Elo; Gemini 3.5 Flash leads on GPQA Diamond, 92.8% to 85.9%; Claude Fable 5 leads on FrontierMath Tiers 1-3 (v2), 87% to 62.8%. Scores are independent evaluations, not either vendor's launch figures.
Which has the larger context window, Claude Fable 5 or Gemini 3.5 Flash?
Both accept about 1.05M tokens of context (1,048,576 and 1,000,000).
Related comparisons
- Claude Fable 5 vs Claude Fable 5.1
- Claude Fable 5 vs Claude Mythos 5.1
- Claude Fable 5 vs Claude Opus 5.5
- Claude Fable 5 vs GPT-5.5
- Claude Fable 5 vs GPT-6 Astra
- Claude Opus 4.8 vs Gemini 3.5 Flash
- Gemini 3.1 Flash-Lite vs Gemini 3.5 Flash
- Gemini 3.5 Flash vs Gemini 3.5 Flash-Lite
- Gemini 3.5 Flash vs GPT-5.5
Production evaluation
Choosing between Claude Fable 5 and Gemini 3.5 Flash?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty