Models / Claude Fable 5.1 / Alternatives
Claude Fable 5.1 alternatives
The best cheaper alternative to Claude Fable 5.1 is Claude Opus 5: 2 points lower Overall, for 50% less per output token.
The best open-weights alternative is Kimi K3, 27 points lower Overall.
Claude Fable 5.1 leads Overall, so every alternative trades some score for price or open weights.
Updated Sep 28, 2026 · Method v1.1 · Higher score, lower price or open weights, best first
Top 10 of 29 alternatives
- Compare Claude Opus 5 with Claude Fable 5.1
Claude Opus 5
Anthropic
Overall88- Rank
- #2 Overall
- Best job
- #1 Coding
- Price, 1M tokens
- $5 in · $25 out
- Released
- Jul 24, 2026
Cheaper2 points lower Overall · 50% less per output token - Compare GPT-5.6 Sol with Claude Fable 5.1
GPT-5.6 Sol
OpenAI
Overall69- Rank
- #5 Overall
- Best job
- #5 Agents
- Price, 1M tokens
- $4 in · $20 out
- Released
- Jul 9, 2026
Cheaper21 points lower Overall · 60% less per output token - Compare Gemini 3.8 Flash with Claude Fable 5.1New
Gemini 3.8 Flash
Google DeepMind
Overall67- Rank
- #6 Overall
- Best job
- #3 Reasoning
- Price, 1M tokens
- $0.75 in · $3.75 out
- Released
- Sep 2, 2026
Cheaper23 points lower Overall · 93% less per output token - Compare Gemini 3.7 Flash with Claude Fable 5.1
Gemini 3.7 Flash
Google DeepMind
Overall66- Rank
- #7 Overall
- Best job
- #4 Reasoning
- Price, 1M tokens
- $0.75 in · $3.75 out
- Released
- Aug 13, 2026
Cheaper24 points lower Overall · 93% less per output token - Compare Kimi K3 with Claude Fable 5.1Open weights
Kimi K3
Moonshot
Overall63- Rank
- #8 Overall
- Best job
- #7 Coding
- Price, 1M tokens
- $3 in · $15 out
- Released
- Jul 16, 2026
CheaperOpen weights27 points lower Overall · 70% less per output token - Compare Claude Opus 4.6 with Claude Fable 5.1
Claude Opus 4.6
Anthropic
Overall59- Rank
- #9 Overall
- Best job
- #2 Writing
- Price, 1M tokens
- $5 in · $25 out
- Released
- Feb 5, 2026
Cheaper31 points lower Overall · 50% less per output token - Compare GPT-5.5 with Claude Fable 5.1
GPT-5.5
OpenAI
Overall59- Rank
- #9 Overall
- Best job
- #5 Coding
- Price, 1M tokens
- $5 in · $30 out
- Released
- Apr 23, 2026
Cheaper31 points lower Overall · 40% less per output token - Compare Claude Opus 4.7 with Claude Fable 5.1
Claude Opus 4.7
Anthropic
Overall57- Rank
- #11 Overall
- Best job
- #3 Coding
- Price, 1M tokens
- $5 in · $25 out
- Released
- Apr 16, 2026
Cheaper33 points lower Overall · 50% less per output token - Compare GLM-5.3 with Claude Fable 5.1
GLM-5.3
Z.ai (Zhipu AI)
Overall57- Rank
- #11 Overall
- Best job
- #11 Coding
- Price, 1M tokens
- $1.40 in · $4.40 out
- Released
- Aug 14, 2026
Cheaper33 points lower Overall · 91% less per output token Claude Opus 4.8
Anthropic
Overall55- Rank
- #13 Overall
- Best job
- #8 Agents
- Price, 1M tokens
- $5 in · $25 out
- Released
- May 28, 2026
Cheaper35 points lower Overall · 50% less per output token