Claude Fable 5.1 Paid vs Claude Haiku 4.5 Paid
Claude Fable 5.1 vs Claude Haiku 4.5 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Claude Fable 5.1 — full profile › · Claude Haiku 4.5 — 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)
$5 /M outputManaged API (no infra to run)
Claude Fable 5.1 vs Claude Haiku 4.5 specs
| Spec | Claude Fable 5.1 | Claude Haiku 4.5 | Winner |
|---|---|---|---|
| Maker | Anthropic | Anthropic | – |
| Type | Proprietary | Proprietary | – |
| Context window | 1M tokens | 200K tokens | |
| Input price | $10/M | $1/M | |
| Output price | $50/M | $5/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
Claude Haiku 4.5 is ~10× cheaper than Claude Fable 5.1 on output tokens ($5 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 5.1 | Claude Haiku 4.5 |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✓ | ✗ |
Benchmarks: Claude Fable 5.1 vs Claude Haiku 4.5
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Claude Fable 5.1 and Claude Haiku 4.5 score
| Criterion | Claude Fable 5.1 | Claude Haiku 4.5 |
|---|---|---|
| Cost-efficiency | 2.0 | 4.0 |
| Context window | 5.0 | 4.0 |
| 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 5.1 Paid
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...
Claude Haiku 4.5 Paid
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance...
Other models in these families
These variants are tracked but not compared here — one page per family keeps the comparison readable.
Frequently asked questions
Claude Fable 5.1 vs Claude Haiku 4.5 — which is cheaper?
Claude Haiku 4.5 is cheaper on output ($5/M vs $50/M).
Which has the larger context window?
Claude Fable 5.1 offers the larger context window (1M tokens).
Claude Fable 5.1 vs Claude Haiku 4.5 — which should I pick in 2026?
Choose Claude Haiku 4.5 for the lower output price ($5/M vs $50/M). Choose Claude Fable 5.1 if you need the larger 1M context window.
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