Claude Fable 5.2 vs GPT OSS 120B High
Claude Fable 5.2 leads the LLM Stats Score 61.3 to 24.6. GPT OSS 120B High is 80.0x cheaper per token.
Anthropic · OpenAI · Updated for 2026
Which is better?
Claude Fable 5.2 leads the overall LLM Stats Score 61.3 to 24.6, ranking #1 overall.
On price, GPT OSS 120B High is roughly 80.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude Fable 5.2 also accepts a larger context window (1,000,000 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 and agents — it leads those capability indexes
- you process long inputs — it offers a 1,000,000 token context window
- you want the most recent training data — it shipped Nov 2026
Choose GPT OSS 120B High
- cost matters — it's about 80.0x cheaper per token
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
29 reported for Claude Fable 5.2 · 7 for GPT OSS 120B High
Claude Fable 5.2 and GPT OSS 120B Highdon'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 80.0x more expensive than GPT OSS 120B High ($0.10/1M tokens).
For output processing, Claude Fable 5.2 ($40.00/1M tokens) is 80.0x more expensive than GPT OSS 120B High ($0.50/1M tokens).
In conclusion, Claude Fable 5.2 is more expensive than GPT OSS 120B High.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude Fable 5.2 accepts 1,000,000 input tokens compared to GPT OSS 120B High's 131,072 tokens. GPT OSS 120B High 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
Claude Fable 5.2 supports multimodal inputs, whereas GPT OSS 120B High does not.
Claude Fable 5.2 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude Fable 5.2
GPT OSS 120B High
License
Usage and distribution terms
Claude Fable 5.2 is licensed under a proprietary license, while GPT OSS 120B High uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
Claude Fable 5.2 was released on 2026-11-09, while GPT OSS 120B High was released on 2025-08-05.
Claude Fable 5.2 is 15 months newer than GPT OSS 120B High.
Nov 9, 2026
0 days ago
1.3yr newerAug 5, 2025
1.3 years ago
Knowledge Cutoff
When training data ends
Claude Fable 5.2 has a documented knowledge cutoff of 2026-06-01, while GPT OSS 120B High'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 GPT OSS 120B High's cutoff date.
Jun 2026
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Provider Availability
Claude Fable 5.2 is available from Anthropic. GPT OSS 120B High is available from OpenAI, Fireworks.
Claude Fable 5.2
GPT OSS 120B High
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Fable 5.2 and GPT OSS 120B High side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Fable 5.2 vs GPT OSS 120B High.