Claude Fable 5.2 vs Particle-1
Claude Fable 5.2 leads the LLM Stats Score 61.3 to 31.8. Particle-1 is 36.6x cheaper per token.
Anthropic · Particle AI · Updated for 2026
Which is better?
Claude Fable 5.2 leads the overall LLM Stats Score 61.3 to 31.8, ranking #1 overall.
On price, Particle-1 is roughly 36.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Particle-1 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude Fable 5.2
- overall performance matters — it scores 61.3 and ranks #1 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you want the most recent training data — it shipped Nov 2026
Choose Particle-1
- cost matters — it's about 36.6x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
At a glance
The differences that matter most.
Individual benchmarks
29 reported for Claude Fable 5.2 · 3 for Particle-1
Claude Fable 5.2 and Particle-1don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Fable 5.2 ($8.00/1M tokens) is 32.0x more expensive than Particle-1 ($0.25/1M tokens).
For output processing, Claude Fable 5.2 ($40.00/1M tokens) is 40.0x more expensive than Particle-1 ($1.00/1M tokens).
In conclusion, Claude Fable 5.2 is more expensive than Particle-1.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Particle-1 accepts 1,048,576 input tokens compared to Claude Fable 5.2's 1,000,000 tokens. Particle-1 can generate longer responses up to 131,072 tokens, while Claude Fable 5.2 is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude Fable 5.2 and Particle-1 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Fable 5.2
Particle-1
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude Fable 5.2 was released on 2026-11-09, while Particle-1 was released on 2026-10-28.
Claude Fable 5.2 is 0 month newer than Particle-1.
Nov 9, 2026
0 days ago
1w newerOct 28, 2026
1 weeks ago
Knowledge Cutoff
When training data ends
Claude Fable 5.2 has a documented knowledge cutoff of 2026-06-01, while Particle-1's cutoff date is not specified.
We can confirm Claude Fable 5.2's training data extends to 2026-06-01, but cannot make a direct comparison without Particle-1's cutoff date.
Jun 2026
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Provider Availability
Claude Fable 5.2 is available from Anthropic. Particle-1 is available from Particle AI.
Claude Fable 5.2
Particle-1
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Fable 5.2 and Particle-1 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Fable 5.2 vs Particle-1.