Plans that grow with your research
Every plan runs Marvell on our keys, so you need no API key of your own. MercerFargo itself is free, with no account needed.
Free
$0
Try Marvell
A few questions a day, to see how Marvell researches for you.
Open MercerFargo- 3 agent chats a day
- 1 Deep Research run a week
- 1 Quant run a week
- Medium thinking
- 6 uploads a day, 2 per message
- 5 skills
- Latest 10 chats in the Research Log
Pro
$20 / month
Daily research
For people who research the market every day, at Extra thinking on every answer.
Upgrade to Pro- 35 agent chats a day
- 25 Deep Research runs a month
- 6 Quant runs a week
- Extra thinking
- 60 uploads a day, 5 per message
- 15 Marvell emails a day
- Memory that follows every answer
- Marvell starts Deep Research and Quant for you
- 20 skills
- Latest 50 chats in the Research Log
Each run counts once, however long it takes.
Pro Plus
$60 / month
Deeper thinking
More runs at Max thinking, and Sonnet 5.5 for the hardest questions.
Upgrade to Pro Plus- 40 agent chats a day
- 30 Deep Research runs a month
- 8 Quant runs a week
- Extra thinking, Max in Deep Research and Quant
- Sonnet 5.5 at Medium: 200 chats, 16 Deep Research, 20 Quant a month
- 100 uploads a day, 5 per message
- 30 Marvell emails a day
- Memory that follows every answer
- Marvell starts Deep Research and Quant for you
- 100 skills
- Every chat in the Research Log
Power
$100 / month
Every model
The most runs, with Sonnet 5.5 and Opus 5.5 at their best settings.
Upgrade to Power- 50 agent chats a day
- 40 Deep Research runs a month
- 12 Quant runs a week
- Extra thinking, Max in Deep Research and Quant
- Sonnet 5.5 at High: 300 chats, 16 Deep Research, 30 Quant a month
- Opus 5.5 at Medium: 100 chats, 10 Deep Research, 12 Quant a month
- 150 uploads a day, 10 per message
- 60 Marvell emails a day
- Memory that follows every answer
- Marvell starts Deep Research and Quant for you
- Unlimited skills
- Every chat in the Research Log
Payments are handled by Stripe. Change plan or cancel any time in Manage billing.
Every limit, side by side
| Feature | FreeFree | Pro$20 a month | Pro Plus$60 a month | Power$100 a month |
|---|---|---|---|---|
| Agent chats | 3 a day | 35 a day | 40 a day | 50 a day |
| Deep Research | 1 a week | 25 a month | 30 a month | 40 a month |
| Quant | 1 a week | 6 a week | 8 a week | 12 a week |
| Sonnet 5.5 | Not included | Not included | 200 chats, 16 Deep Research and 20 Quant a month | 300 chats, 16 Deep Research and 30 Quant a month |
| Opus 5.5 | Not included | Not included | Not included | 100 chats, 10 Deep Research and 12 Quant a month |
| Thinking | Medium | Extra | Extra, Max in Deep Research and Quant | Extra, Max in Deep Research and Quant |
| Uploads | 6 a day, 2 per message | 60 a day, 5 per message | 100 a day, 5 per message | 150 a day, 10 per message |
| Marvell emails | Not included | 15 a day | 30 a day | 60 a day |
| Memory | Not included | Included | Included | Included |
| Agent-started Deep Research and Quant | Not included | Included | Included | Included |
| Skills | 5 | 20 | 100 | Unlimited |
| Research Log | Latest 10 chats | Latest 50 chats | Every chat | Every chat |
Your own API keys keep working on every plan. When a plan limit runs out, Marvell switches to them, and a run cut short is given back.