Gemini 4 Carbon vs GPT-6 Astra
A direct, empirical evaluation of Gemini 4 Carbon (Google DeepMind) against GPT-6 Astra (OpenAI).
Gemini 4 Carbon
Developed by Google DeepMind · Carbon-Aware Frontier Transformer on TPU v6e parameters
Sub-watt green computing, 62% energy reduction per million tokens, carbon-aware datagrid routing, and eco-tier batch execution discounts.
GPT-6 Astra
Developed by OpenAI · Proprietary Frontier parameters
Complex multi-step engineering, formal math proofs, autonomous computer/browser navigation, and CAD synthesis.
| Metric | Gemini 4 Carbon | GPT-6 Astra |
|---|---|---|
| SWE-bench Verified | 69.2% | 79.4% |
| MMLU-Pro | 84.6% | 91.2% |
| MATH-500 | 91.4% | 98.6% |
| Context Window | 1,000,000 tokens | 1,050,000 tokens |
| Input Pricing (per 1M) | $0.80 | $10.00 |
| Output Pricing (per 1M) | $2.40 | $50.00 |