Model Comparison
GPT-6 Astra (Max)
vs. Gemini 4 Carbon (High)
GPT-6 Astra (Max) has not been available at LLMBase since 26 October 2026. Open alternative: DeepSeek V4 Pro →
Comparing 2 AI models · 0 benchmarks · OpenAI, Google
Recommended Pick
GoGemini 4 Carbon (High)9 metric winsStrongest on: Value, Input price, Output price
Best Value
Gemini 4 Carbon (High)
100.0 value score
59.4 reasoning / $8.00/1M
Lowest Price
Gemini 4 Carbon (High)
$4.00/1M input price
Best Reasoning
Gemini 4 Carbon (High)
59.4 reasoning score
Blends available reasoning benchmarks
Best for Coding
GPT-6 Astra (Max)
76.9 coding index
Differences That Matter
Best value
Gemini 4 Carbon (High) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Gemini 4 Carbon (High) is 2.5x cheaper on input tokens than GPT-6 Astra (Max).
Speed gap
Gemini 4 Carbon (High) generates about 1.3x as many tokens per second as GPT-6 Astra (Max).
Reasoning gap
Gemini 4 Carbon (High) leads GPT-6 Astra (Max) by 2.5 points on reasoning.
Top-pick rationale
Gemini 4 Carbon (High) wins 9 measurable categories, including Value, Input price, Output price, Blended price.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-6 Astra (Max)
OpenAI
TTFT
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Time
—
tok/s
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Tokens
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Cost
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Gemini 4 Carbon (High)
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
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Full Comparison
| Metric | Op GPT-6 Astra (Max) | Top Pick Go Gemini 4 Carbon (High) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $10.00/1M | $4.00/1M |
| Output Cost | $50.00/1M | $20.00/1M |
| Blended (3:1) | $20.00/1M | $8.00/1M |
| Specifications | ||
| Organization | OpenAI | |
| Release Date | Sep 3, 2026 | Oct 28, 2026 |
| Performance & Speed | ||
| Throughput | 73.1 tok/s | 92.4 tok/s |
| TTFT | 262890ms | 100310ms |
| Latency | 262890ms | 100310ms |
| Composite Indices | ||
| Value Score | 38.3 | 100.0 |
| Reasoning Score | 56.9 | 59.4 |
| Intelligence | 56.9 | 59.4 |
| Coding | 76.9 | — |
Key Takeaways
Gemini 4 Carbon (High) offers the best value at $4.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Gemini 4 Carbon (High) has the strongest reasoning profile with a 59.4 reasoning score,combining the available reasoning-heavy benchmarks.
GPT-6 Astra (Max) reaches a 76.9 coding index,making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GPT-6 Astra (Max)
- Code generation
- Software development
Gemini 4 Carbon (High)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
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