QuickSilver Pro vs Fireworks AI
Fireworks AI runs its own GPU fleet and sets premium prices for DeepSeek. QuickSilver Pro serves the latest DeepSeek V4 wave — V4 Flash at $0.112 / $0.224 for low-cost chat and V4 Pro at $0.435 / $0.87 for premium reasoning — well below Fireworks' rates. Same OpenAI-compatible surface, two-line migration.
At a glance
| Feature | QuickSilver Pro | fireworks |
|---|---|---|
| Catalog focus | Curated frontier + open models; 23 accept image input | Many open models + vision + fine-tuning |
| DeepSeek V4 Pro output | $0.87 / 1M | $3.48 / 1M |
| Official V4 Flash 0731 | $0.112 / $0.224 | $0.14 / $0.28 |
| Fine-tuning / deployments | No | Yes |
| FireFunction V2 (tool calling model) | No | Yes |
| Audio models | No | Yes |
| Image generation | Gemini 3 Pro Image and FLUX.2 Pro | Yes |
| OpenAI-compatible chat | Yes | Yes |
| Minimum top-up | $5 | Varies |
Pricing (per million tokens, USD)
Competitor list prices, last checked 2026-08-12.
| Model | QSP input | QSP output | fireworks input | fireworks output | vs. list |
|---|---|---|---|---|---|
| DeepSeek V4 Flash 0731 | $0.112 | $0.224 | $0.14 | $0.28 | 20% |
| DeepSeek V4 Pro | $0.435 | $0.87 | $1.74 | $3.48 | 80% |
| Qwen3.6-35B-A3B | $0.112 | $0.80 | Comparable | Comparable | — |
Migration - two lines
import os
from openai import OpenAI
client = OpenAI(
base_url="https://api.quicksilverpro.io/v1",
api_key=os.environ["QSP_KEY"],
)
r = client.chat.completions.create(
model="deepseek-v4-pro",
messages=[{"role": "user", "content": "Hi"}],
)FAQ
On the same V4 Pro model, QuickSilver Pro is $0.435 / $0.87 per 1M tokens versus Fireworks' current $1.74/$3.48 rate, exactly 80% lower. The official V4 Flash 0731 build is $0.112 / $0.224 versus Fireworks' $0.14/$0.28, 20% lower on both legs.
Two lines: change base_url to api.quicksilverpro.io/v1 and swap the API key. Model ID mappings: accounts/fireworks/models/deepseek-v4-pro -> deepseek-v4-pro.
Within 10% on p50 for the V4 wave and Qwen. Live per-model latency is at quicksilverpro.io/status.
No. FireFunction V2 is Fireworks' proprietary fine-tuned model; it is not in the QuickSilver Pro catalog. For tool calling, DeepSeek V4 Flash and Qwen3.6-35B-A3B both support the OpenAI tools / function calling API.