Claude Fable 5 vs GPT-5.6 Luna
Claude Fable 5 leads in 3 of 8 categories
Arena ELO
Tie
Cheaper
Claude Fable 5
Faster
Tie
Detailed Comparison
| Category | Claude Fable 5 | GPT-5.6 Luna |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Context Window | 1M WIN | 128K |
| Input Price ($/1M) | $5 WIN | $10 |
| Output Price ($/1M) | $25 WIN | $30 |
| Arena ELO | N/A | N/A |
| Coding | N/A | N/A |
| Reasoning | N/A | N/A |
| Speed (tokens/sec) | N/A | N/A |
| Open Source | No | No |
Frequently Asked Questions
Which is cheaper, Claude Fable 5 or GPT-5.6 Luna?
Claude Fable 5 is approximately 25% cheaper than GPT-5.6 Luna per million tokens.
Which has a larger context window?
Claude Fable 5 supports 1M context, while GPT-5.6 Luna supports 128K.
Is Claude Fable 5 or GPT-5.6 Luna open source?
Claude Fable 5 is proprietary. GPT-5.6 Luna is proprietary.
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