Head to head, with the numbers
Every pair on the leaderboard: price, context, independent evals and a plain answer on when to pick which. Updated Oct 10, 2026.
- Claude Opus 5.5 vs GPT-6 Astra
- Claude Opus 5.5 vs Gemini 4 Argon
- Claude Opus 5.5 vs Claude Sonnet 5.5
- Claude Opus 5.5 vs GPT-6.1 Sol
- Claude Opus 5.5 vs Claude Fable 5.1
- Claude Opus 5.5 vs Claude Haiku 5.5
- Claude Opus 5.5 vs Muse Spark 1.3
- Claude Opus 5.5 vs DeepSeek Flash (4.1)
- Claude Opus 5.5 vs GPT-6 Luna
- Claude Opus 5.5 vs Kimi K3
- Claude Opus 5.5 vs Grok 4.7
- GPT-6 Astra vs Gemini 4 Argon
- GPT-6 Astra vs Claude Sonnet 5.5
- GPT-6 Astra vs GPT-6.1 Sol
- GPT-6 Astra vs Claude Fable 5.1
- GPT-6 Astra vs Claude Haiku 5.5
- GPT-6 Astra vs Muse Spark 1.3
- GPT-6 Astra vs DeepSeek Flash (4.1)
- GPT-6 Astra vs GPT-6 Luna
- GPT-6 Astra vs Kimi K3
- GPT-6 Astra vs Grok 4.7
- Gemini 4 Argon vs Claude Sonnet 5.5
- Gemini 4 Argon vs GPT-6.1 Sol
- Gemini 4 Argon vs Claude Fable 5.1
- Gemini 4 Argon vs Claude Haiku 5.5
- Gemini 4 Argon vs Muse Spark 1.3
- Gemini 4 Argon vs DeepSeek Flash (4.1)
- Gemini 4 Argon vs GPT-6 Luna
- Gemini 4 Argon vs Kimi K3
- Gemini 4 Argon vs Grok 4.7
- Claude Sonnet 5.5 vs GPT-6.1 Sol
- Claude Sonnet 5.5 vs Claude Fable 5.1
- Claude Sonnet 5.5 vs Claude Haiku 5.5
- Claude Sonnet 5.5 vs Muse Spark 1.3
- Claude Sonnet 5.5 vs DeepSeek Flash (4.1)
- Claude Sonnet 5.5 vs GPT-6 Luna
- Claude Sonnet 5.5 vs Kimi K3
- Claude Sonnet 5.5 vs Grok 4.7
- GPT-6.1 Sol vs Claude Fable 5.1
- GPT-6.1 Sol vs Claude Haiku 5.5
- GPT-6.1 Sol vs Muse Spark 1.3
- GPT-6.1 Sol vs DeepSeek Flash (4.1)
- GPT-6.1 Sol vs GPT-6 Luna
- GPT-6.1 Sol vs Kimi K3
- GPT-6.1 Sol vs Grok 4.7
- Claude Fable 5.1 vs Claude Haiku 5.5
- Claude Fable 5.1 vs Muse Spark 1.3
- Claude Fable 5.1 vs DeepSeek Flash (4.1)
- Claude Fable 5.1 vs GPT-6 Luna
- Claude Fable 5.1 vs Kimi K3
- Claude Fable 5.1 vs Grok 4.7
- Claude Haiku 5.5 vs Muse Spark 1.3
- Claude Haiku 5.5 vs DeepSeek Flash (4.1)
- Claude Haiku 5.5 vs GPT-6 Luna
- Claude Haiku 5.5 vs Kimi K3
- Claude Haiku 5.5 vs Grok 4.7
- Muse Spark 1.3 vs DeepSeek Flash (4.1)
- Muse Spark 1.3 vs GPT-6 Luna
- Muse Spark 1.3 vs Kimi K3
- Muse Spark 1.3 vs Grok 4.7
- DeepSeek Flash (4.1) vs GPT-6 Luna
- DeepSeek Flash (4.1) vs Kimi K3
- DeepSeek Flash (4.1) vs Grok 4.7
- GPT-6 Luna vs Kimi K3
- GPT-6 Luna vs Grok 4.7
- Kimi K3 vs Grok 4.7