Claude Fable 5 Paid vs SAFugu Ultra v2 Paid
Claude Fable 5 vs Fugu Ultra v2 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Claude Fable 5 — full profile › · Fugu Ultra v2 — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
$50 /M outputManaged API (no infra to run)
$30 /M outputManaged API (no infra to run)
Claude Fable 5 vs Fugu Ultra v2 specs
| Spec | Claude Fable 5 | Fugu Ultra v2 | Winner |
|---|---|---|---|
| Maker | Anthropic | Sakana AI | – |
| Type | Proprietary | Proprietary | – |
| Context window | 1M tokens | 1M tokens | = Tie |
| Input price | $10/M | $5/M | SAFugu Ultra v2 |
| Output price | $50/M | $30/M | SAFugu Ultra v2 |
| Vision / multimodal | Yes | Yes | = Tie |
| Tool / function calling | Yes | Yes | = Tie |
| Self-hostable | No (API only) | No (API only) | – |
| License | Proprietary | Proprietary | – |
Price gap & when to choose each
Fugu Ultra v2 is ~1.7× cheaper than Claude Fable 5 on output tokens ($30 vs $50 per M tokens).
- You want frontier performance through a managed API
- You value reliability & ecosystem
- You don't want to manage infrastructure
- You want frontier performance through a managed API
- You want the lower output price
- You value reliability & ecosystem
- You don't want to manage infrastructure
Feature comparison
| Capability | Claude Fable 5 | Fugu Ultra v2 |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✓ | ✓ |
Benchmarks: Claude Fable 5 vs Fugu Ultra v2
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Claude Fable 5 and Fugu Ultra v2 score
| Criterion | Claude Fable 5 | Fugu Ultra v2 |
|---|---|---|
| Cost-efficiency | 2.0 | 3.0 |
| Context window | 5.0 | 5.0 |
| Openness | 1.5 | 1.5 |
| Self-hosting | 1.0 | 1.0 |
| Multimodality | 5.0 | 5.0 |
Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.
What each model is
Claude Fable 5 Paid
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and...
Fugu Ultra v2 Paid
Fugu Ultra v2 is the higher-performance model in Sakana AI's Fugu family. Rather than a single monolithic model, Fugu is a learned multi-agent orchestration system: a language model trained to...
Frequently asked questions
Claude Fable 5 vs Fugu Ultra v2 — which is cheaper?
Fugu Ultra v2 is cheaper on output ($30/M vs $50/M).
Which has the larger context window?
Claude Fable 5 offers the larger context window (1M tokens).
Claude Fable 5 vs Fugu Ultra v2 — which should I pick in 2026?
Choose Fugu Ultra v2 for the lower output price ($30/M vs $50/M). Choose Claude Fable 5 if you need the larger 1M context window.
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