FAQ
Frequently asked questions
Everything you might want to know about QuickSilver Pro — the OpenAI-compatible inference API for Muse Wonder, GPT-6.1 Sol, Claude Opus 5.5, Sonnet 5.5 and Haiku 5.5, Gemini 3.8 Flash, Grok 4.7, Qwen3.8 Max, GLM-5.3, DeepSeek V4.1, Mistral Large 4 and Kimi K3.
- Claude Opus 5.5$1.00 / $5.00 per million tokens — 75% below Anthropic list.
- New · DeepSeek V4.1 Flash 1017At OpenRouter list parity, $0.098 / $0.294 per million tokens.
- New · Gemini 4 ArgonGoogle’s new flagship reasoning model, at introductory $2.00 / $10.00 per million tokens.
Frequently asked questions
Basics
QuickSilver Pro is an OpenAI-compatible inference API with 91 models, one endpoint and one API key.
The live catalog contains 91 models. Browse their capabilities, context windows and current prices.
Models & behaviour
Yes. To turn reasoning off for direct chat, send reasoning.enabled=false in the request body; in Python use extra_body.
Pricing
Claude costs 75% below published list rates; Qwen 3.7 Plus, MiniMax M3 and MiMo V2.6 Pro cost ~20% less. GLM-5.3 and DeepSeek V4 Flash match their selected OpenRouter endpoints. Other models may be at list or differ by token leg.
- DeepSeek V4.1 Flash 1017$0.098 / $0.294
- DeepSeek V4 Pro$0.70 / $2.10
- Kimi K3.1 Pro$2.00 / $10.00
- GLM 5.3$0.60 / $2.20
- Claude Opus 5.5$1.00 / $5.00
- GPT-6.1 Sol$2.00 / $10.00
- Grok 4.7$2.00 / $6.00
Closed frontier and open-weight models share one endpoint and key.
Integration & migration
Yes. Change base_url to https://api.quicksilverpro.io/v1 in the official openai Python / Node / Swift SDKs. Streaming, tool calling, and usage.cost accounting all work out of the box. json_schema strict mode is model-dependent: the Claude models do not support it, so a schema there is advisory and the enforced path is a tool with strict: true.
Yes. Any tool that accepts an OpenAI base_url and API key can use QuickSilver Pro. Start with deepseek-v4.1-flash-1017, muse-spark-open, step-5-preview, gemini-4-argon, muse-wonder, gpt-6.1-sol, gpt-6-luna, claude-opus-5-5, claude-sonnet-5-5, claude-haiku-5-5, gemini-3.8-flash, mistral-large-4, qwen3.8-max, kimi-k3.1-pro, glm-5.3 and grok-4.7.
Change base_url to api.quicksilverpro.io/v1, swap the API key, and apply these model-ID mappings:
- deepseek/deepseek-v4-flash-0731deepseek-v4-flash
- deepseek/deepseek-v4-prodeepseek-v4-pro
- qwen/qwen3.7-maxqwen3.7-max
- qwen/qwen3.7-plusqwen3.7-plus
- qwen/qwen3.7-flashqwen3.7-flash
- qwen/qwen3.6-plusqwen3.6-plus
- qwen/qwen3.6-35b-a3bqwen3.6-35b
- moonshotai/kimi-k2.6kimi-k2.6
- moonshotai/kimi-k2.7-codekimi-k2.7-code
- moonshotai/kimi-k3kimi-k3
- z-ai/glm-5.3glm-5.3
- z-ai/glm-5.3-flashglm-5.3-flash
- openai/gpt-oss-120bgpt-oss-120b
- qwen/qwen3.8-27bqwen3.8-27b
- qwen/qwen3.8-flashqwen3.8-flash-next
- qwen/qwen3.8-omni-flashqwen3.8-omni-flash
- z-ai/glm-5.2glm-5.2
Free credit
New accounts get $0.05 free credit with no card, usable on 5 starter chat models in browser chat or through the API with your account key. API access also includes five speech models; top up from $5 to unlock the rest. Browser chat also has a separate allowance of 5 free messages. And your first credit purchase is matched 100%, up to $50 in bonus credits. The bonus is added to your balance the next time you top up (any amount from $5): pay $20, then top up $5 later, and $20 of bonus arrives with it. A larger first payment still receives the $50 maximum. One per customer and payment card; standard pay-as-you-go after that.
New accounts get $0.05 free credit with no card, usable on 5 starter chat models in browser chat or through the API with your account key. API access also includes five speech models; top up from $5 to unlock the rest. Browser chat also has a separate allowance of 5 free messages.
Company
MachineFi Inc., a Delaware corporation based in Menlo Park, CA. Payments are processed by Stripe and appear on your statement as MACHINEFI INC.
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