Model decision surface
Compare AI models
Start with Nex-N2.5-Pro 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
Nex-N2.5-Pro vs GPT-6 Astra
Live dataset updated 9/9/2026, 8:46:14 PM UTC
Open 1200×630 evidence receipt| Field | Nex-N2.5-Pro Nex AGI | GPT-6 Astra OpenAI |
|---|---|---|
| ModelCap position | #17 | #1 |
| Index score | 75.8 | 93.7 |
| Evidence | Estimatedglobal-corpus-prior over 182 held-out anchors (12%); launch card against 7 resolved peers on 8 rows (88%); exceeds every named peer on 1 of 8 rows; optimism haircut 0 from cross-lab-probe; shrunk 3 toward the measured corpus | Measured4 public benchmark observations across 4 boards |
| Input / 1M | Free | $10.00 |
| Output / 1M | Free | $50.00 |
| Pricing status | fresh | fresh |
| Context | 262K | 1M |
| Providers | 1 | 2 |
| Weight access | Open weights | API only |
Decision facts
- Nex-N2.5-Pro is #17; GPT-6 Astra is #1 on the same current language board.
- Index scores are 75.8 for Nex-N2.5-Pro 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.
- Evidence differs: Nex-N2.5-Pro is Estimated; GPT-6 Astra is Measured.
- Listed output price per 1M tokens is $0 for Nex-N2.5-Pro 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 $0 for Nex-N2.5-Pro versus $45.00 for GPT-6 Astra. Nex-N2.5-Pro costs 100.0% 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 262,144 tokens for Nex-N2.5-Pro and 1,050,000 for GPT-6 Astra.
- Weight access differs: Nex-N2.5-Pro is open; GPT-6 Astra is none.
- ModelCap currently lists 1 providers for Nex-N2.5-Pro and 2 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.