AI Models · Paid vs Paid

Claude Fable 5 Paid vs Claude Sonnet 4.6 Paid

Claude Fable 5 vs Claude Sonnet 4.6 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.

Prices & specs refreshed from live data · OpenSourceAI.tech

Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.

Choose Claude Sonnet 4.6 for the lower output price ($15/M vs $50/M). Choose Claude Fable 5 if you need the larger 1M context window.

Claude Fable 5 vs Claude Sonnet 4.6 specs

SpecClaude Fable 5Claude Sonnet 4.6
MakerAnthropicAnthropic
TypeProprietaryProprietary
Context window1M tokens1M tokens
Input price$10/M$3/M
Output price$50/M$15/M
Vision / multimodalYesYes
Tool / function callingYesYes
Self-hostableNo (API only)No (API only)
LicenseProprietaryProprietary

Feature comparison

CapabilityClaude Fable 5Claude Sonnet 4.6
Open weights (downloadable)
Self-hostable
Runs fully offline
Vision / multimodal
Tool / function calling
1M+ context window

Benchmarks: Claude Fable 5 vs Claude Sonnet 4.6

Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).

Claude Sonnet 4.6 delivers 2.6× more intelligence per dollar.
Claude Fable 5
Claude Sonnet 4.6
Intelligence index
59.9
47.2
Coding index
76.5
63
GPQA
92.6%
87.5%
Humanity's Last Exam
53.3%
30%
Long Context Reasoning
70%
70.7%
SciCode
60.2%
46.8%
IFBench
63.5%
56.6%
τ²-Bench
98.5%
75.7%
τ-Bench Banking
26.8%
30.5%
Terminal-Bench
84.6%
71.2%
Terminal-Bench Hard
62.9%
53%
Speed
70.3 tok/s
69.6 tok/s
Latency
60.4s
51.32s
Intelligence per $
3
7.9

Benchmark data by Artificial Analysis.

How Claude Fable 5 and Claude Sonnet 4.6 score

🤝 Neck and neck on these criteria (2.9 vs 3.1 / 5).
CriterionClaude Fable 5Claude Sonnet 4.6
Cost-efficiency2.03.0
Context window5.05.0
Openness1.51.5
Self-hosting1.01.0
Multimodality5.05.0

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

Anthropic · Proprietary

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...

Claude Sonnet 4.6 Paid

Anthropic · Proprietary

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with...

Other models in these families

These variants are tracked but not compared here — one page per family keeps the comparison readable.

Other variants tracked
Claude Sonnet 4.5Claude Sonnet 5

Frequently asked questions

Claude Fable 5 vs Claude Sonnet 4.6 — which is cheaper?

Claude Sonnet 4.6 is cheaper on output ($15/M vs $50/M).

Which has the larger context window?

Claude Fable 5 offers the larger context window (1M tokens).

Claude Fable 5 vs Claude Sonnet 4.6 — which should I pick in 2026?

Choose Claude Sonnet 4.6 for the lower output price ($15/M vs $50/M). Choose Claude Fable 5 if you need the larger 1M context window.

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