Documentation
si16z is a pump.fun launchpad where every coin is paired with an SI (super intelligence) model: one of 345 models from 52 labs on OpenRouter. The coin's creator fees become compute for that model. This page covers every part of it, from launching to the numbers on a coin card to the public API.
Overview
Every pump.fun coin earns a creator fee on each trade. On most launchpads that fee goes to whoever launched the coin. Here it goes to compute for the coin's paired model instead: it is swept into a compute vault that belongs to that coin alone.
We say SI (super intelligence) rather than AI. An SI model is any model a coin can be paired with.
Quickstart
Launching takes about a minute and one wallet signature.
- 1Connect a Solana walletPhantom, Solflare, Backpack or any Wallet Standard wallet, or WalletConnect on mobile. You need enough SOL for network fees plus any initial buy.
- 2Pick an SI modelChoose a frontier model from the tiles, or search the full catalog. The pairing cannot be changed later.
- 3Describe the coinName, ticker and image are required; description and links are optional. The description is also given to the model as context.
- 4Sign onceOne transaction creates the coin on pump.fun, with an optional initial buy in the same transaction. The coin page opens as soon as it confirms.
Models and pairing
The catalog is read live from OpenRouter and refreshed hourly, so new models become pairable the day they ship. A coin pairs with one concrete model, so the catalog leaves out batch-only variants, rolling aliases that point at whatever is newest, free tiers and routers.
Frontier flagships today
The newest top-tier model from each frontier lab. These are the tiles on the launch form and the models orbiting the home page.
| Model | Lab | Input / M | Output / M | Context |
|---|---|---|---|---|
| Claude Fable 5.1 | Anthropic | $10 | $50 | 1M |
| GPT-6 Astra | OpenAI | $10 | $50 | 1.05M |
| Gemini 3.8 Flash | $0.75 | $3.75 | 1.05M | |
| Grok 4.7 | xAI | $2 | $6 | 500K |
| DeepSeek V4 Pro 0813 | DeepSeek | $0.66 | $1.98 | 1.05M |
| Qwen3.8 Max Prime | Qwen | $4 | $12 | 1M |
| Muse Spark 1.3 | Meta | $1.25 | $4.25 | 1.05M |
| Mistral Medium 3.5 | Mistral | $1.5 | $7.5 | 262K |
| Kimi K3 | Moonshot | $3 | $15 | 1.05M |
| GLM 5.3 Prime | Z.ai | $2.8 | $8.8 | 1M |
| MiniMax M3 | MiniMax | $0.30 | $1.2 | 1.05M |
| Nemotron 3.5 Lightning | NVIDIA | $0.060 | $0.16 | 262K |
Choosing a model
- Cheaper models go further. The same fees buy far more tokens on a fast, efficient model than on a flagship. A busy terminal on a frontier model can use up its compute quickly.
- Pairing is permanent. It is written into the coin's on-chain metadata. To pair with a different model, launch another coin.
- Many coins, one model. Any number of coins can pair with the same model. Each keeps its own compute; they do not pool.
Launching a coin
A coin launched here is an ordinary pump.fun coin: same bonding curve, same migration, tradable on pump.fun and anywhere else. One thing differs. Its creator is not your wallet but a compute vault created for that coin alone.
Fields
| Field | Rules |
|---|---|
| Model | Any model in the catalog. Required. |
| Name | Up to 32 characters. Required. |
| Ticker | Up to 10 characters, upper case, no spaces. Required. |
| Image | PNG, JPEG, WebP or GIF, up to 5 MB. Pinned to IPFS. Required. |
| Description | Up to 1,000 characters. Shown on the coin and given to the model as context. |
| X, Telegram, website | Optional links, stored in the coin's metadata. |
| Initial buy | 0 to 50 SOL, bought at the opening price in the launch transaction. |
What the transaction does
The server pins your image and the coin's metadata to IPFS, generates the mint and its compute vault, and builds one transaction for your wallet to sign: pump.fun's create_v2 with the vault as creator, followed by a buy if you set one. Nothing is sent until you sign, and the coin is listed only once the transaction confirms.
Metadata
Alongside the standard fields, the metadata carries an si block, so anyone can read which model a coin is paired with and where its fees go:
{
"name": "My Token",
"symbol": "TOKEN",
"image": "https://…/ipfs/…",
"description": "…",
"si": {
"model": "anthropic/claude-fable-5.1",
"computeVault": "<vault address>"
}
}Fees and compute vaults
pump.fun pays its creator fee to whichever account is the coin's creator. Because each coin's creator is its own vault, fees never mix between coins and never reach the launcher.
- One vault per coin. Generated at launch and shown on the coin page. Anyone can inspect it on Solscan.
- Swept automatically. Accrued fees are claimed into the vault continuously once at least 0.002 SOL is waiting. Each claim is a top-up, recorded with its transaction on the coin page and in the compute feed.
- Before and after migration. On the bonding curve fees arrive as SOL; after migration the AMM pays them as wrapped SOL. Both count toward compute.
- Accruing vs claimed. The coin page shows both: fees pump.fun owes the coin that have not been swept yet, and fees already in the vault.
How compute is counted
A coin's compute is every fee claimed into its vault, less what has been spent on prompts to its model.
blended price = (3 × input price + output price) ÷ 4
tokens ≈ compute (USD) ÷ blended price
Fees are paid in SOL while models are priced in dollars per token, so the two meet at the current SOL price. The token estimate assumes chat-shaped traffic, where a prompt and its context are about three times the length of the reply.
Worked example
A coin paired with Claude Fable 5.1 has had 2 SOL of fees claimed, and its terminal has spent $12.50. SOL is $119.95.
| Compute | 2 − 12.5 ÷ 119.95 = 1.8958 SOL ($227.40) |
| Blended price | (3 × $10 + $50) ÷ 4 = $20 per million tokens |
| Tokens | ≈ 11.4M |
Because fees are held in SOL and spending is priced in dollars, a coin's dollar compute and token estimate rise and fall with the SOL price, even when nobody trades or prompts.
The SI terminal
Every coin page has a terminal: a public chat with the coin's paired model. Replies stream in as they are generated. The model is given the coin's name and description as context.
Metering
Each reply is metered at the model's OpenRouter price for the tokens it actually read and wrote, and that cost is drawn from the coin's compute. Before answering, the terminal checks the coin can cover a full-length reply; if it cannot, the terminal is disabled until trading adds more compute.
Limits
| Prompt length | Up to 2,000 characters. |
| Reply length | Up to 700 tokens. |
| Rate | 4 prompts per minute per visitor. |
| Memory | Each prompt is answered on its own; the model does not see earlier exchanges. |
| Visibility | Public. The latest exchanges show on the coin page, tagged with the sender's wallet if connected. |
Coin lifecycle
- 1LaunchThe coin is created on pump.fun with its compute vault as creator. Compute starts at zero.
- 2Bonding curveThe coin trades on pump.fun's curve. Every trade accrues a creator fee, and compute grows with volume.
- 3Terminal opensOnce compute can cover a reply, anyone can prompt the paired model.
- 4MigrationWhen the curve completes, the coin moves to pump.fun's AMM. Fees keep flowing into the same vault.
- 5OngoingCompute rises with trading and falls with use. Its whole history stays on the coin page.
Reading a coin
What each number on a coin card and coin page means.
| Compute | Available compute in SOL: fees claimed less compute spent. |
| Tokens | Roughly how many tokens that compute buys on the paired model today. |
| Fees claimed | Every creator fee swept into the vault since launch. |
| Accruing | Fees pump.fun owes the coin that have not been swept yet. |
| Tokens used | Tokens processed by the model in the coin's terminal, input and output. |
| Compute spent | What those tokens cost at the model's prices, in USD. |
| Top-ups | How many times fees have been swept into the vault. |
| Market cap | Price times one billion tokens of supply. |
| Curve | How much of the bonding curve has sold. At 100% the coin migrates. |
The watermark behind a coin card is the logo of the lab behind its paired model. The lab filter above the grid narrows the list to coins paired with one lab's models.
API
Read-only JSON endpoints, no key required. Responses are cached for a few seconds.
/api/coinsEvery live coin with market data, curve progress and compute.
{
"coins": [
{
"mint": "…", "symbol": "TOKEN", "name": "My Token",
"model_id": "anthropic/claude-fable-5.1", "model_name": "Claude Fable 5.1",
"vault": "…", "total_fees_sol": 2, "compute_used_usd": 12.5,
"marketCapUsd": 41200, "progress": 0.37, "graduated": false,
"compute": { "sol": 1.8958, "usd": 227.40, "tokens": 11370048 }
}
]
}/api/modelsThe pairable catalog, with prices in USD per token, plus today's flagship ids.
{
"models": [
{ "id": "anthropic/claude-fable-5.1", "name": "Claude Fable 5.1", "lab": "anthropic",
"context": 1000000, "prompt": 0.00001, "completion": 0.00005 }
],
"flagships": ["anthropic/claude-fable-5.1", "openai/gpt-6-astra", "google/gemini-3.8-flash", …]
}/api/chatPrompt a coin's SI. Streams the reply as plain text.
# request curl -N https://si16z.fun/api/chat \ -H "content-type: application/json" \ -d '{ "mint": "<coin mint>", "prompt": "Summarize this coin in one line." }' # errors come back as JSON with a status code 402 { "error": "$TOKEN is out of compute. Trading refills it." } 429 { "error": "too many prompts, try again in a minute" }
FAQ
Does the launcher get the creator fees?
No. The fees become compute for the coin's paired model. Buy your own coin if you want exposure to it.
Can I change a coin's model?
No. The pairing is written into the coin's metadata at launch. Launch another coin to feed another model.
Who can prompt a coin's model?
Anyone, from the coin's page. You do not need to hold the coin or connect a wallet.
What happens when compute runs out?
The terminal is disabled until trading adds more. Nothing else about the coin changes.
Why does the token estimate change on its own?
It is priced at the current SOL price and the model's current OpenRouter price. Either one moving changes the estimate.
Does migration change anything?
No. After the coin moves to the AMM its creator fees arrive as wrapped SOL and are swept into the same vault.
Is this financial advice?
No. Coins launched here are memecoins on pump.fun. Trade only what you can afford to lose.
Glossary
| SI model | Super intelligence model: any model a coin can be paired with. |
| Pairing | The permanent link between a coin and its model, set at launch. |
| Creator fee | The fee pump.fun pays a coin's creator on every trade. |
| Compute vault | The account created for one coin to receive its creator fees. |
| Top-up | One sweep of accrued fees into a compute vault. |
| Compute | Fees claimed less compute spent: the budget for the paired model. |
| Terminal | The public chat with a coin's paired model, on its page. |
| Bonding curve | pump.fun's launch market. A coin migrates to the AMM when it completes. |