Claude Fable 5 Paid vs 
Mistral Medium 3.1 Paid
Claude Fable 5 vs Mistral Medium 3.1 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Claude Fable 5 — full profile › · Mistral Medium 3.1 — 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)
$2 /M outputManaged API (no infra to run)
Claude Fable 5 vs Mistral Medium 3.1 specs
| Spec | Claude Fable 5 | Mistral Medium 3.1 | Winner |
|---|---|---|---|
| Maker | Anthropic | Mistral AI | – |
| Type | Proprietary | Proprietary | – |
| Context window | 1M tokens | 131K tokens | |
| Input price | $10/M | $0.4/M | |
| Output price | $50/M | $2/M | |
| 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
Mistral Medium 3.1 is ~25× cheaper than Claude Fable 5 on output tokens ($2 vs $50 per M tokens).
- You want frontier performance through a managed API
- You need the longer 1M context window
- 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 | Mistral Medium 3.1 |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✓ | ✗ |
Benchmarks: Claude Fable 5 vs Mistral Medium 3.1
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Claude Fable 5 and Mistral Medium 3.1 score
| Criterion | Claude Fable 5 | Mistral Medium 3.1 |
|---|---|---|
| Cost-efficiency | 2.0 | 4.5 |
| Context window | 5.0 | 3.5 |
| 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...
Mistral Medium 3.1 Paid
Mistral Medium 3.1 is an updated version of Mistral Medium 3, which is a high-performance enterprise-grade language model designed to deliver frontier-level capabilities at significantly reduced operational cost. It balances...
Frequently asked questions
Claude Fable 5 vs Mistral Medium 3.1 — which is cheaper?
Mistral Medium 3.1 is cheaper on output ($2/M vs $50/M).
Which has the larger context window?
Claude Fable 5 offers the larger context window (1M tokens).
Claude Fable 5 vs Mistral Medium 3.1 — which should I pick in 2026?
Choose Mistral Medium 3.1 for the lower output price ($2/M vs $50/M). Choose Claude Fable 5 if you need the larger 1M context window.
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