Model Comparison
GPT-6.1 Sol (Medium)
vs. Gemini 4 Carbon (High)
GPT-6.1 Sol (Medium) 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
OpGPT-6.1 Sol (Medium)6 metric winsStrongest on: Value, Input price, Output price
Best Value
GPT-6.1 Sol (Medium)
100.0 value score
46.1 reasoning / $4.00/1M
Lowest Price
GPT-6.1 Sol (Medium)
$2.00/1M input price
Best Reasoning
Gemini 4 Carbon (High)
59.4 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
GPT-6.1 Sol (Medium) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
GPT-6.1 Sol (Medium) is 2.0x cheaper on input tokens than Gemini 4 Carbon (High).
Speed gap
Gemini 4 Carbon (High) generates about 1.6x as many tokens per second as GPT-6.1 Sol (Medium).
Reasoning gap
Gemini 4 Carbon (High) leads GPT-6.1 Sol (Medium) by 13.3 points on reasoning.
Top-pick rationale
GPT-6.1 Sol (Medium) wins 6 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-6.1 Sol (Medium)
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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Gemini 4 Carbon (High)
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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Which answer was more useful?
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Full Comparison
| Metric | Top Pick Op GPT-6.1 Sol (Medium) | Go Gemini 4 Carbon (High) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $2.00/1M | $4.00/1M |
| Output Cost | $10.00/1M | $20.00/1M |
| Blended (3:1) | $4.00/1M | $8.00/1M |
| Specifications | ||
| Organization | OpenAI | |
| Release Date | Sep 29, 2026 | Oct 28, 2026 |
| Performance & Speed | ||
| Throughput | 51.3 tok/s | 82.5 tok/s |
| TTFT | 3550ms | 100530ms |
| Latency | 3550ms | 100530ms |
| Composite Indices | ||
| Value Score | 100.0 | 64.4 |
| Reasoning Score | 46.1 | 59.4 |
| Intelligence | 46.1 | 59.4 |
Key Takeaways
GPT-6.1 Sol (Medium) offers the best value at $2.00/1M,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.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GPT-6.1 Sol (Medium)
- Cost-sensitive applications
- High-volume processing
Gemini 4 Carbon (High)
- Complex reasoning tasks
- Research & analysis
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