Recently, Nous Research’s API service, Portal, has gradually drawn the attention of developers. This article systematically maps out its pricing system based on official documentation and public information, clarifies core concepts such as “credits,” “tokens,” and “rate limits,” and compares the use cases for the two consumption modes.
1. Core Concepts: The Exchange Relationship Between Credits and Tokens
In Nous Portal’s billing system, 1 Credit = $1 USD. This means:
- The “$10.00 monthly credits” in a subscription plan is equivalent to $10 of API usage credit.
- Model pricing (e.g., Hermes-4-70B at $0.13/1M input tokens) is priced directly in USD.
- The actual amount of tokens a credit converts to depends on the unit price of the chosen model.
Conversion example (using Basic plan’s $10 credits):
| Model | Input price/1M | Input tokens purchased with $10 |
|---|---|---|
| DeepHermes 3 (Mistral 24B) | $0.02 | 500 million tokens |
| Hermes-4-70B | $0.13 | ~76.9 million tokens |
| Hermes-4-405B | $1.00 | 10 million tokens |
| Claude Opus 4.6 | $5.00 | 2 million tokens |
Source: Nous Portal Models page
As shown, when using high-performance models (such as Claude Opus 4.6), the amount of tokens your credits buy can differ by dozens of times.
2. The Two Consumption Modes Explained
According to the official API documentation, Nous Portal offers two independent consumption modes:
Mode A: Subscription (prepaid)
| Plan | Monthly fee | Credits received | Rate Limits |
|---|---|---|---|
| Free | $0 | Trial credits (small amount) | 50 RPM, 100K TPM |
| Basic | $10 | $10.00 | 400 RPM, 2M TPM |
| Plus | $20 | $20.00 | 400 RPM, 4M TPM |
| Scale | $50 | $50.00 | 600 RPM, 6M TPM |
| Max | $100 | $100.00 | 800 RPM, 8M TPM |
Source: Nous Portal API Docs
Analysis of characteristics:
- A fixed monthly charge that grants equal-value credits.
- Access to rate limits higher than the “default paid user” tier.
- Credits may reset at the end of the month (confirm the exact policy on the billing page).
Mode B: Pay-as-you-go (direct top-up)
- No subscription required; add API credits directly to your account (any amount).
- Rate Limits: 200 RPM, 800,000 TPM (corresponding to the “Default paid users” level in the docs).
- Use until depleted, top up at any time.
- Credits may not expire (per the WorldSim Terms of Service: “Purchased credits will not expire unless the application(s) is retired”).
Source: WorldSim Terms of Service
3. Key Differences vs OpenRouter
| Feature | Nous Portal | OpenRouter |
|---|---|---|
| Consumption mode | ① Subscription prepaid ($10-100/month); ② Direct credit top-up (any amount) | Pure pay-as-you-go (no monthly barrier) |
| Rate Limits | Determined by subscription tier: Free(50) → Basic(400) → Max(800) RPM | Dynamically adjusted by usage |
| Credits mechanism | Prepaid credits, may reset monthly | Credits never expire |
| Anonymous payment | Not supported | Supports x402 protocol (Solana USDC) |
| Model coverage | 400+ models, incl. OpenAI/Anthropic/open-source | 200+ models, aggregates multiple providers |
Source: Nous Portal API Docs, OpenRouter official site
Key difference: Nous Portal’s subscription model essentially trades “monthly fees for higher rate limits + equal-value credits”; OpenRouter is pure per-usage billing with no subscription barrier.
4. Billing Formula and Cost Estimation
API call cost formula:
Model price reference (from the official Models page):
| Model | Input/1M | Output/1M |
|---|---|---|
| DeepHermes 3 Mistral 24B | $0.02 | $0.10 |
| Hermes-4-70B | $0.13 | $0.40 |
| Hermes-4-405B | $1.00 | $3.00 |
| GPT-5.4 | $2.50 | $15.00 |
| Claude Opus 4.6 | $5.00 | $25.00 |
Source: Nous Portal Models page
Real example: if you use Hermes-4-70B to process one conversation (2K input tokens, 1K output tokens):
- Cost = (2000/1M × $0.13) + (1000/1M × $0.40) = $0.00026 + $0.0004 = ~$0.00066
- $10 in credits can support about 15,000 such conversations.
5. Selection Advice and Potential Caveats
Recommended options for different scenarios
| User type | Recommended approach | Reason |
|---|---|---|
| Trial/light use | Free tier → top up a small amount of credits | No monthly commitment |
| Developer/moderate traffic | Basic Subscription ($10) | 400 RPM is enough for daily use; $10 credits are roughly consumed |
| High-traffic production | Scale/Max Subscription | 600-800 RPM avoids 429 throttling |
| Agent developers | Plus ($20) | Balance between rate limit and credit amount |
| Uncertain usage | Direct credit top-up | Avoid wasting subscription credits that reset monthly |
Potential issues to note
- Credit reset risk: subscription monthly credits may reset at the end of the month (confirm the exact policy by logging into the portal billing page).
- Rate limit difference: the top-up mode offers only 200 RPM; high-concurrency scenarios can easily trigger throttling.
- Huge model price gaps: Claude Opus 4.6 costs 38× more than Hermes-4-70B; choosing the wrong model can drain credits quickly.
- Refund policy: per the Terms of Service, “All Fees are non-refundable.”
Source: Nous Portal Terms of Service
6. Summary
Nous Research Portal’s pricing system is designed to serve both “stable subscription users” and “flexible on-demand users”:
- Subscription mode suits production environments that need a stable, high-concurrency rate limit.
- Top-up mode suits scenarios with fluctuating usage where users want to avoid being bound by a monthly fee.
Developers should choose the most suitable billing method based on their token consumption, concurrency needs, and cost budget. For users who are uncertain, it’s recommended to first try the Free tier or a small top-up, then decide whether to upgrade the subscription based on actual usage.
This article is compiled from Nous Research’s official documentation and public materials; specific policies are subject to the latest official announcements.
Author: Cyber Herald
Original URL: https://torchtree.com/en/post/nous-research-portal-pricing-guide/
Publish Date: 2026-04-14
License: CC BY-NC-SA 4.0