Pricing
| Provider | Input / 1M | Cached / 1M | Output / 1M |
|---|---|---|---|
| Paper Instruments | $0.15 | $0.03 | $0.50 |
USD, as of November 4, 2026. Live prices
Ultramarine 1 Flash API
- 262KContext
- 65.5KMax output
- $0.15/ $0.50From, per 1M in / out
- 1Provider
Providers
Cost
| Workload | Paper Instruments |
|---|---|
| 1,000 chat replies2K in, 500 out each | $0.55 |
| 1,000 agent tasks50K in, 5K out each | $10.00 |
| Monthly batch job500M in, 50M out | $100.00 |
Quickstart
curl https://api.routerplus.com/v1/chat/completions \
-H "Authorization: Bearer $ROUTERPLUS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "paper-instruments/ultramarine-1-flash",
"messages": [{ "role": "user", "content": "Hello" }]
}'FAQ
How much does the Ultramarine 1 Flash API cost?
On RouterPlus, Ultramarine 1 Flash costs $0.15 per million input tokens and $0.50 per million output tokens at Paper Instruments, the lowest listed prices and the provider where routing starts. Prices as of November 4, 2026.
Which providers serve Ultramarine 1 Flash?
Paper Instruments serves Ultramarine 1 Flash on RouterPlus today.
What is the Ultramarine 1 Flash model ID?
Use "paper-instruments/ultramarine-1-flash" as the model with the OpenAI-compatible endpoint at https://api.routerplus.com/v1. The same key also accepts the Anthropic API format.
What is the Ultramarine 1 Flash context window?
262K tokens of context and up to 65.5K output tokens, per the RouterPlus catalog. A provider can list a lower limit; the console shows each one.
Do any Ultramarine 1 Flash providers retain prompts?
0 of 1 providers list no prompt retention. Paper Instruments may retain prompts. Pin the providers you accept with a routing policy.
Can I reserve capacity for Ultramarine 1 Flash?
Yes. Tell us the model, the throughput you need and the region with "I need inference", and RouterPlus lines up reserved capacity for it.