Model Comparison
GPT-6 Astra (Max)
vs. Claude Opus 5.5 (Max, Default Fallback)
GPT-6 Astra (Max) has not been available at LLMBase since 26 October 2026. Open alternative: DeepSeek V4 Pro →
Claude Opus 5.5 (Max, Default Fallback) has not been available at LLMBase since 26 October 2026. Open alternative: DeepSeek V4 Pro →
Comparing 2 AI models · 0 benchmarks · OpenAI, Anthropic
Recommended Pick
AnClaude Opus 5.5 (Max, Default Fallback)7 metric winsStrongest on: Value, Input price, Output price
Best Value
Claude Opus 5.5 (Max, Default Fallback)
100.0 value score
59.1 reasoning / $8.00/1M
Lowest Price
Claude Opus 5.5 (Max, Default Fallback)
$4.00/1M input price
Best Reasoning
Claude Opus 5.5 (Max, Default Fallback)
59.1 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
Claude Opus 5.5 (Max, Default Fallback) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Claude Opus 5.5 (Max, Default Fallback) is 2.5x cheaper on input tokens than GPT-6 Astra (Max).
Speed gap
Claude Opus 5.5 (Max, Default Fallback) generates about 2.1x as many tokens per second as GPT-6 Astra (Max).
Reasoning gap
Claude Opus 5.5 (Max, Default Fallback) leads GPT-6 Astra (Max) by 2.2 points on reasoning.
Top-pick rationale
Claude Opus 5.5 (Max, Default Fallback) wins 7 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
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tok/s
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Tokens
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Cost
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Claude Opus 5.5 (Max, Default Fallback)
Anthropic
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 An Claude Opus 5.5 (Max, Default Fallback) |
|---|---|---|
| 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 | Anthropic |
| Release Date | Sep 3, 2026 | Sep 22, 2026 |
| Performance & Speed | ||
| Throughput | 45.8 tok/s | 95.1 tok/s |
| TTFT | 362510ms | 647780ms |
| Latency | 362510ms | 647780ms |
| Composite Indices | ||
| Value Score | 38.5 | 100.0 |
| Reasoning Score | 56.9 | 59.1 |
| Intelligence | 56.9 | 59.1 |
Key Takeaways
Claude Opus 5.5 (Max, Default Fallback) offers the best value at $4.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Opus 5.5 (Max, Default Fallback) has the strongest reasoning profile with a 59.1 reasoning score,combining the available reasoning-heavy benchmarks.
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)
- General-purpose AI
- Versatile applications
Claude Opus 5.5 (Max, Default Fallback)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
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