Compare / head-to-head
Claude Fable 5.1vsGemini 2.5 Pro
Claude Fable 5.1 leads 4 of 4 shared benchmarks. Gemini 2.5 Pro is 5.3x cheaper per token. Gemini 2.5 Pro has the larger context window (1.0M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
4 – 0
Claude Fable 5.1 leads
Cheaper per token
Gemini 2.5 Pro
5.3x cheaper, input + output
Larger context
Gemini 2.5 Pro
1.0M tokens
Provider uptime (30d)
100% · 100%
Anthropic · Google
Claude Fable 5.1
Anthropic · released 2026-09-01
textvision
Gemini 2.5 Pro
Google · released 2025-06-17
textvisionaudio
Quality
Benchmark matrix
4 shared · 4 only Claude Fable 5.1 · 8 only Gemini 2.5 Pro| Benchmark | Claude Fable 5.1 | Gemini 2.5 Pro | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 4 | ||||
| Humanity's Last Exam (no tools) | 60.9% ↗ | 21.6% ↗ | +39.3 pt | Claude Fable 5.1 |
| FrontierMath Tier 4 v2 (Epoch AI run) | 87.8% ↗epoch | 0% ↗epoch | +87.8 pt | Claude Fable 5.1 |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 90.2% ↗epoch | 24.6% ↗epoch | +65.6 pt | Claude Fable 5.1 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 100% ↗epoch | 84.7% ↗epoch | +15.3 pt | Claude Fable 5.1 |
| Only Claude Fable 5.1 reports · 4 | ||||
| CursorBench 3.2.0 | 73.4% ↗ | not reported | — | — |
| GDPval-AA v2 | 1853 ↗ | not reported | — | — |
| SimpleQA Verified | 70.8% ↗epoch | not reported | — | — |
| Terminal-Bench Science 0.1 | 52.6% ↗ | not reported | — | — |
| Only Gemini 2.5 Pro reports · 8 | ||||
| SWE-bench Verified | not reported | 59.6% ↗ | — | — |
| GPQA Diamond | not reported | 86.4% ↗ | — | — |
| AIME 2025 | not reported | 88% ↗ | — | — |
| LMArena Elo | not reported | 1457.8 ↗ | — | — |
| Aider Polyglot | not reported | 82.2% ↗ | — | — |
| LiveCodeBench | not reported | 74.2% ↗ | — | — |
| MMMU | not reported | 82% ↗ | — | — |
| SWE-bench Verified (Epoch AI run) | not reported | 57.6% ↗epoch | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude Fable 5.1 minus Gemini 2.5 Pro in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Claude Fable 5.1 | Gemini 2.5 Pro | Edge |
|---|---|---|---|
| Context window | 1M tokens | 1.0M tokens | Gemini 2.5 Pro |
| Max output | 128K tokens | 66K tokens | Claude Fable 5.1 |
| Input price / 1M | $10 ↗ | $1.25 ↗ | Gemini 2.5 Pro |
| Output price / 1M | $50 ↗ | $10 ↗ | Gemini 2.5 Pro |
| Cached input / 1M | $0.25 ↗ | $0.125 ↗ | Gemini 2.5 Pro |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $60 | $11.25 | Gemini 2.5 Pro |
| Modalities | text · vision | text · vision · audio | Gemini 2.5 Pro |
| Released | 2026-09-01 | 2025-06-17 | — |
| Cited benchmark scores | 8 | 14 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Claude Fable 5.1 vs …
Models sharing the most benchmarksMore matchups
Gemini 2.5 Pro vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Claude Fable 5.1 and Gemini 2.5 Pro on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.