# Gemini 4 Carbon vs GPT-6 Astra

As of Nov 3, 2026, Gemini 4 Carbon leads GPT-6 Astra in 5 of 6 shared categories: General LLM, Reasoning, Long context, Factuality, and Legal.

## Pricing

Gemini 4 Carbon: price per 1M tokens is unset in the catalog.

GPT-6 Astra: $20 per 1M blended tokens.

Gemini 4 Carbon: closed weights.

GPT-6 Astra: closed weights.

## Benchmarks side by side

| Benchmark | Gemini 4 Carbon | GPT-6 Astra |
| --- | ---: | ---: |
| Excel Modeling Benchmark (EMB) | 76.5 | 72.7 |
| Finance Agent | 67.2 | 60.4 |
| Legal Research Bench | 55.8 | 39.4 |
| LMArena Text (style-controlled, coding) | 1573 | 1542 |
| LMArena Text (style-controlled, hard prompts) | 1548 | 1500 |
| LMArena Text (style-controlled, longer query) | 1542 | 1488 |
| LMArena Text (style-controlled, overall) | 1528 | 1476 |
| LMArena Text factuality | 1522 | 1467 |
| LMArena WebDev | 1768 | 1773 |
| Tax Agent Bench | 51.8 | 20.7 |
| Vals Index | 70.5 | 65.0 |
| Vibe Code Bench | 89.1 | 89.6 |

## Verdict

As of Nov 3, 2026, Gemini 4 Carbon leads GPT-6 Astra in 5 of 6 shared categories: General LLM, Reasoning, Long context, Factuality, and Legal.

- Which to pick, General LLM: As of Nov 3, 2026, Gemini 4 Carbon leads GPT-6 Astra in General LLM at #1 against #27.
- Which to pick, Reasoning: As of Nov 3, 2026, Gemini 4 Carbon leads GPT-6 Astra in Reasoning at #1 against #29.
- Which to pick, Coding › Web dev: As of Nov 3, 2026, GPT-6 Astra leads Gemini 4 Carbon in Coding › Web dev at #2 against #4.
- Which to pick, Long context: As of Nov 3, 2026, Gemini 4 Carbon leads GPT-6 Astra in Long context at #1 against #24.
- Which to pick, Factuality: As of Nov 3, 2026, Gemini 4 Carbon leads GPT-6 Astra in Factuality at #1 against #32.
- Which to pick, Legal: As of Nov 3, 2026, Gemini 4 Carbon leads GPT-6 Astra in Legal at #1 against #18.

As of Nov 3, 2026, Gemini 4 Carbon is leading, crown pending confirmation in General LLM (since Nov 3, 2026; sources Vals Index and LMArena Text (style-controlled, overall); methodology v1.0).

As of Nov 3, 2026, GPT-6 Astra is state of the art in Math (since Sep 28, 2026; sources Humanity's Last Exam; methodology v1.0).

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