Model Detail
fable-traces
—fable-traces is a large language model with 4B parameters released by AliesTaha. The model is registered under the text-generation pipeline tag on Hugging Face, distributed under the permissive apache-2.0 license.
fable-traces ships with 4B parameters. Total weight footprint is approximately 4.0 GB, which is the relevant figure when planning local-inference VRAM. The apache-2.0 license is permissive, allowing commercial deployment and derivative work without per-seat fees, though attribution requirements still apply.
fable-traces is best fit for general-purpose chat and instruction-following workloads. Treat this as a starting matrix rather than a benchmark verdict — the right deployment usually depends on the specific evaluation suite that mirrors your workload.
fable.intermittent: benchmarking probabilistic forecasting methods for intermittent time series
arXiv:2609.28607v3 Announce Type: replace Abstract: Intermittent time series are common in spare-parts demand and retail sales. Since the cost of forecast errors is typically asymmetric, decisions such as inventory control require the full predictive distribution rather than a point forecast. Many p
A Red-Team Study of Anthropic Fable 5 & Opus 4.8 Models
arXiv:2606.18193v2 Announce Type: replace-cross Abstract: We evaluate the adversarial robustness of three frontier large language models (LLMs) developed by Anthropic, Opus 4.8, Fable 5 and its successor Fable 5.1, against four families of automated jailbreak attack across 7,826 harmful intents span
Anthropic releases Opus 5.5 with lower prices and Fable-level performance
Anthropic called it "the strongest-performing model we've tested to date."

Anthropic launches Claude Fable 5.1 and says it’s up to 45 percent cheaper for agentic work
Anthropic says its newest AI models, Fable 5.1 and Mythos 5.1, address criticisms from customers about price, data retention, and overzealous safeguards. The company claims Claude Fable 5.1 offers stronger performance than Fable 5, but costs around 25 percent less typically and up to 45 percent less
Anthropic’s new Fable release is cheaper, less restrictive
Fable 5.1 includes changes meant to reduce token cost and false-positive restrictions from the model's safeguards.