Plans that grow with your research
Every plan runs Marvell on our keys, so you need no API key of your own. Free runs the Marvell 1.1 basic harness; Pro and Pro Extra unlock the retail lens + Strict mode. Quotes, charts and watchlists are free with no account. Sign in to use the rest.
Free
$0
Try Marvell
A few questions a day, to see how Marvell researches for you.
Open Mercer Research- 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
- Basic harness (Free)
- 5 skills
- Latest 10 chats in the Research Log
Recommended · Best value
Pro
$20 / month$16.67 / month$200 a year
Everything included
Both models, every thinking level and every feature, for people who research the market every day.
Upgrade to Pro- 40 agent chats a day
- 30 Deep Research runs a month
- 8 Quant runs a week
- Medium, High or Max thinking
- Marvell 1.1 Alpha: 60 chats, 8 Deep Research, 8 Quant a month
- 100 uploads a day, 10 per message
- 30 Marvell emails a day
- Retail lens + Strict
- Memory that follows every answer
- Marvell suggests Deep Research and Quant runs, you approve each
- Unlimited skills
- Every chat in the Research Log
Each run counts once, however long it takes.
Pro Extra
$50 / month$41.67 / month$500 a year
More of everything
The same models and features as Pro, with about 2.5 times the runs.
Upgrade to Pro Extra- 100 agent chats a day
- 80 Deep Research runs a month
- 20 Quant runs a week
- Medium, High or Max thinking
- Marvell 1.1 Alpha: 200 chats, 20 Deep Research, 20 Quant a month
- 250 uploads a day, 10 per message
- 60 Marvell emails a day
- Retail lens + Strict
- Memory that follows every answer
- Marvell suggests Deep Research and Quant runs, you approve each
- Unlimited skills
- Every chat in the Research Log
Payments are handled by Stripe. Change plan or cancel any time in Manage billing.
What $20 a month gets you
| Product | List price | A month |
|---|---|---|
| Mercer Research Pro | $20 / month$200 / year | $20$16.67 |
| Perplexity Pro | $17 / month, billed yearly | $17 |
| Seeking Alpha Premium | $299 / year | $24.92 |
| Koyfin Plus | $39 / month | $39 |
- 40 agent chats a day
- 30 Deep Research runs a month
- 8 Quant runs a week
- Medium, High or Max thinking
- Marvell 1.1 Alpha: 60 chats, 8 Deep Research, 8 Quant a month
List prices as of Oct 2026, from each vendor's own page. The products differ; the list is what Pro includes.
Every plan, side by side
| Feature | FreeFree | Pro$20 a month | Pro Extra$50 a month |
|---|---|---|---|
| Agent chats | 3 a day | 40 a day | 100 a day |
| Deep Research | 1 a week | 30 a month | 80 a month |
| Quant | 1 a week | 8 a week | 20 a week |
| Marvell 1.1 Alpha | Not included | 60 chats, 8 Deep Research and 8 Quant a month | 200 chats, 20 Deep Research and 20 Quant a month |
| Thinking | Medium | Medium, High or Max | Medium, High or Max |
| Retail lens + Strict | Not included | Included | Included |
| Uploads | 6 a day, 2 per message | 100 a day, 10 per message | 250 a day, 10 per message |
| Marvell emails | Not included | 30 a day | 60 a day |
| Memory | Not included | Included | Included |
| Agent-suggested Deep Research and Quant | Not included | Included | Included |
| Skills | 5 | Unlimited | Unlimited |
| Research Log | Latest 10 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.