Model decision surface
Compare AI models
Start with Gemini 3.8 Flash and GPT-6 Astra, or choose any two current ranked language models. Compare capability evidence, price, context, provider availability, and weight access without pretending one field decides every use case.
Current public data
Gemini 3.8 Flash vs GPT-6 Astra
Live dataset updated 9/9/2026, 8:08:43 PM UTC
Open 1200×630 evidence receipt| Field | Gemini 3.8 Flash | GPT-6 Astra OpenAI |
|---|---|---|
| ModelCap position | #7 | #1 |
| Index score | 82.2 | 93.7 |
| Evidence | Measured4 public benchmark observations across 4 boards | Measured4 public benchmark observations across 4 boards |
| Input / 1M | $0.75 | $10.00 |
| Output / 1M | $3.75 | $50.00 |
| Pricing status | fresh | fresh |
| Context | 1M | 1M |
| Providers | 2 | 2 |
| Weight access | API only | API only |
Decision facts
- Gemini 3.8 Flash is #7; GPT-6 Astra is #1 on the same current language board.
- Index scores are 82.2 for Gemini 3.8 Flash and 93.7 for GPT-6 Astra. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.
- Both positions use Measured evidence.
- Listed output price per 1M tokens is $3.75 for Gemini 3.8 Flash and $50.00 for GPT-6 Astra. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $3.38 for Gemini 3.8 Flash versus $45.00 for GPT-6 Astra. Gemini 3.8 Flash costs 92.5% less in this scenario. This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the selected endpoint before budgeting.
- Published context is 1,048,576 tokens for Gemini 3.8 Flash and 1,050,000 for GPT-6 Astra.
These are separate published fields, not a synthetic winner. ModelCap does not collapse price, access, context, and capability evidence into a hidden recommendation score.
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Each comparison page is a permanent, shareable URL with the same live figures as this tool: ModelCap Index position, API pricing, context window, provider count, weight access and every shared benchmark board.