Free models
$0
Open models served through Groq. 5 requests per minute, 50 per UTC day, shared capacity. A $0 balance is fine.
For builders and agents
One API.
Every model.
No markup games.
Point any OpenAI client at Writingmate Gateway. Free models within shared limits. Paid models at the provider's own price plus exactly 5%, settled from the provider receipt.
No card needed for free models. Prepay from $20 when you want paid models.
- 01Create an account
Email or your Writingmate login.
- 02Create an API key
One active key, revoke any time.
- 03Make a free request
Groq-hosted open models, shared capacity.
- 04Add funds for paid models
Prepaid USD balance, no subscription.
Transparent pricing
Upstream cost + 5%. That is the whole price list.
Paid models
cost + 5%
Direct provider pricing from the provider's official price list, plus exactly 5%. The final charge uses the provider receipt, never an estimate.
Funding
from $20
Prepay with a card. Each request reserves its worst case and settles to the actual cost. Per-request, daily, and monthly caps protect your balance.
Live model list and current prices: /v1/models.
Compatibility
Works with the tools you already use.
| Endpoint | Access | Streaming |
|---|---|---|
| /v1/chat/completions | free and paid | Yes |
| /v1/responses | paid | Yes |
| /v1/completions | paid | Yes |
| /v1/models | public | No |
export OPENAI_BASE_URL="https://gateway.writingmate.ai/v1"
export OPENAI_API_KEY="your-gateway-key"
curl $OPENAI_BASE_URL/chat/completions \
-H "Authorization: Bearer $OPENAI_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"free/general","messages":[{"role":"user","content":"Say hello in five words."}]}'Machine-readable matrix: /v1/compatibility. Direct providers only, no fallbacks, no prompt logging.