CompareAI models
- Claude Fable 5.1Anthropic
- GPT-5.6 LunaOpenAI
ReasoningCodingCost efficiencyContext windowMultimodalTool use
| Model | Reasoning | Coding | Cost efficiency | Context window | Multimodal | Tool use |
|---|---|---|---|---|---|---|
| Claude Fable 5.1 | 100/100 | No data | 4/100 | 81/100 | 50/100 | No data |
| GPT-5.6 Luna | 37/100 | 81/100 | 65/100 | 98/100 | 50/100 | 69/100 |
Overview
Author
Context length
1M
1.1M
Reasoning
True
True
Input modalities
Text, Image, Pdf
Text, Image, Pdf
Output modalities
Text
Text
Providers
Pricing
Input
$10/ 1M
$0.20/ 1M
Output
$50/ 1M
$1.20/ 1M
Cached input
$0.25/ 1M
$0.02/ 1M
MomentumLast 2 mo
Unique users
0
565K
Completed sessions
1
1,490,248
Token share
0%
1.07%
Tokens
00%
6.8T+100%
No trend data
JUL 23SEP 16
RetentionWeek 1
Returning users
Pending
57.9%40K user-weeks
Related comparisons. Other model pairs to check.
Nearby alternativeClaude Fable 5.1 vs Gemma-SEA-LION-v4-27B-ITClaude Fable 5.1·Gemma-SEA-LION-v4-27B-ITNearby alternativeGPT-5.6 Luna vs Gemma-SEA-LION-v4-27B-ITGPT-5.6 Luna·Gemma-SEA-LION-v4-27B-ITRelated comparisonClaude Fable 5.1 vs Qwen3.8 Max 0902Claude Fable 5.1·Qwen3.8 Max 0902Related comparisonGPT-5.6 Luna vs Qwen3.8 Max 0902GPT-5.6 Luna·Qwen3.8 Max 0902