Gemini 4 Carbon vs GPT-6 Astra
Gemini 4 Carbon is from Google. GPT-6 Astra is from OpenAI. Gemini 4 Carbon has no public token price yet.
Prices updated . Benchmarks updated .
| Gemini 4 Carbon | GPT-6 Astra | |
|---|---|---|
| Lab | OpenAI | |
| You send / 1M | TBA | $10.00 |
| It replies / 1M | TBA | $50.00 |
| Context | TBA | 1.05M |
| Launched | 2026-10-28 | 2026-09-04 |
| Weights | Closed | Closed |
| Typical request | TBA | $0.038 |
| ECI | n/a | 169.1 |
| GPQA | n/a | 95.8% |
| ARC-AGI-2 | n/a | 95.0% |
| HLE | n/a | 54.8% |
| AIME | n/a | 100.0% |
| SimpleQA | n/a | 75.6% |
| CritPt | 36.0% | 31.7% |
| Arena | 1,540 | 1,441 |
| Arena web | 1,768 | 1,773 |
Which is cheaper?
Gemini 4 Carbon has no public token price yet, so this page cannot say which model is cheaper. GPT-6 Astra costs $50.00 per million output tokens. Context windows are TBA for Gemini 4 Carbon and 1.05M for GPT-6 Astra. Prices are US dollars per million tokens at current public rates.
Which scores higher?
Gemini 4 Carbon scores higher on CritPt: 36.0% against 31.7% for GPT-6 Astra. The score is from the current independent dataset, not from the lab. Lab-reported scores are kept off this comparison. Context windows are TBA and 1.05M. Prices are US dollars per million tokens at current public rates.
Verdict
Gemini 4 Carbon scores higher on CritPt (36.0% vs 31.7%). A public token price is missing for at least one model, so this page does not call a cheaper winner. Context is TBA for Gemini 4 Carbon and 1.05M for GPT-6 Astra. Use the model pages for every score on file, including lab-reported numbers.
FAQ
Which is cheaper, Gemini 4 Carbon vs GPT-6 Astra?
Gemini 4 Carbon has no public token price yet, so this page cannot say which model is cheaper. GPT-6 Astra costs $50.00 per million output tokens. Context windows are TBA for Gemini 4 Carbon and 1.05M for GPT-6 Astra. Prices are US dollars per million tokens at current public rates.
Which scores higher, Gemini 4 Carbon vs GPT-6 Astra?
Gemini 4 Carbon scores higher on CritPt: 36.0% against 31.7% for GPT-6 Astra. The score is from the current independent dataset, not from the lab. Lab-reported scores are kept off this comparison. Context windows are TBA and 1.05M. Prices are US dollars per million tokens at current public rates.
What is the verdict for Gemini 4 Carbon vs GPT-6 Astra?
Gemini 4 Carbon scores higher on CritPt (36.0% vs 31.7%). A public token price is missing for at least one model, so this page does not call a cheaper winner. Context is TBA for Gemini 4 Carbon and 1.05M for GPT-6 Astra. Use the model pages for every score on file, including lab-reported numbers.
Our coverage
Open this pair in the comparison view
Sources and licenses
- OpenRouter: Prices, context windows, modalities and the model list come from the OpenRouter public API. Data: OpenRouter.
- Vercel AI Gateway: The no-training flag comes from the Vercel AI Gateway model list.
- models.dev: Lab launch dates, open-weights flags and knowledge cutoffs come from models.dev. Copyright (c) 2025 models.dev, MIT License.
- Epoch AI: Independent benchmark scores and the Epoch Capabilities Index (ECI) come from Epoch AI's Benchmarking Hub, used under CC BY 4.0. Epoch AI, Capabilities & benchmarking, epoch.ai/benchmarks. Scores Epoch marks as external keep their original license, and the source is named on each score.
- LMArena: Arena Elo (text, webdev and vision) comes from the LMArena leaderboard dataset (lmarena-ai/leaderboard-dataset), CC BY 4.0, leaderboard date 2026-10-28.
- Lab-reported scores, when an editor has added them, are the lab's own numbers. Each one links to the source and is labeled lab-reported. They are not used to rank the lists.
- What a score measures: the benchmark guide.