Claude Sonnet 5.5 vs GPT-6 Luna
A direct, empirical evaluation of Claude Sonnet 5.5 (Anthropic) against GPT-6 Luna (OpenAI).
Claude Sonnet 5.5
Developed by Anthropic · Proprietary Frontier Dynamic Hybrid Reasoner parameters
Terminal-Bench 4.0 execution (70.6%), SWE-bench Verified coding (82.4%), GitHub Copilot multi-file edits, and low-latency autonomous agentic coding at $2/$10 pricing.
GPT-6 Luna
Developed by OpenAI · Proprietary High-Throughput Distillation parameters
High-throughput document extraction, sub-second routing, customer service triage, code autocomplete, and cost-optimized reasoning via Luna Pro mode.
| Metric | Claude Sonnet 5.5 | GPT-6 Luna |
|---|---|---|
| SWE-bench Verified | 82.4% | 48.2% |
| MMLU-Pro | 88.4% | 74.6% |
| MATH-500 | 95.2% | 84.1% |
| Context Window | 1,000,000 tokens | 1,050,000 tokens |
| Input Pricing (per 1M) | $2.00 | $0.10 |
| Output Pricing (per 1M) | $10.00 | $0.50 |