Solutions
AI API solutions
Straight answers to common AI API buying questions.
Cheap LLM API
The cheapest LLM bill comes from two things: picking the smallest model that does the job, and paying less per token. See how it works, what it costs, and how
OpenAI-compatible API
If your code uses the OpenAI SDK, you can reach Claude, Gemini, DeepSeek and other makers' models through Somnus by changing two settings: the base URL and th
Cheap Claude API — 2x credit on every top-up
Use the Claude API for less: Somnus credits every top-up at 2× or more, so Claude Haiku 5.5 effectively costs $0.05 / $0.25 per 1M tokens.
Cheap ChatGPT API — 2x credit on every top-up
Use the ChatGPT API for less: Somnus credits every top-up at 2× or more, so GPT-6 Luna effectively costs $0.05 / $0.25 per 1M tokens.
Cheap Gemini API — 2x credit on every top-up
Use the Gemini API for less: Somnus credits every top-up at 2× or more, so Gemini 3.8 Flash effectively costs $0.375 / $1.875 per 1M tokens.
Cheap Grok API — 2x credit on every top-up
Use the Grok API for less: Somnus credits every top-up at 2× or more, so Grok 4.7 effectively costs $1 / $3 per 1M tokens.
Cheap DeepSeek API — 2x credit on every top-up
Use the DeepSeek API for less: Somnus credits every top-up at 2× or more, so DeepSeek V4.1 Flash effectively costs $0.075 / $0.3 per 1M tokens.
Cheap Kimi API — 2x credit on every top-up
Use the Kimi API for less: Somnus credits every top-up at 2× or more, so Kimi K3 effectively costs $1.5 / $7.5 per 1M tokens.
Cheap GLM API — 2x credit on every top-up
Use the GLM API for less: Somnus credits every top-up at 2× or more, so GLM 5.3 effectively costs $0.7 / $2.2 per 1M tokens.
Cheap Qwen API — 2x credit on every top-up
Use the Qwen API for less: Somnus credits every top-up at 2× or more, so Qwen 3.8 Max effectively costs $0.825 / $2.475 per 1M tokens.
Cheap Claude Fable 5.1 API from $5 / $25
Claude Fable 5.1 by Anthropic lists at $10 / $50 per 1M tokens. With Somnus's 2×+ credit it effectively costs $5 / $25 or less.
Cheap Claude Opus 5.5 API from $2 / $10
Claude Opus 5.5 by Anthropic lists at $4 / $20 per 1M tokens. With Somnus's 2×+ credit it effectively costs $2 / $10 or less.
Cheap Claude Opus 5 API from $2.5 / $12.5
Claude Opus 5 by Anthropic lists at $5 / $25 per 1M tokens. With Somnus's 2×+ credit it effectively costs $2.5 / $12.5 or less.
Cheap Claude Haiku 5.5 API from $0.05 / $0.25
Claude Haiku 5.5 by Anthropic lists at $0.1 / $0.5 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.05 / $0.25 or less.
Cheap Claude Haiku 4.5 API from $0.5 / $2.5
Claude Haiku 4.5 by Anthropic lists at $1 / $5 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.5 / $2.5 or less.
Cheap GPT-6 Astra API from $5 / $25
GPT-6 Astra by OpenAI lists at $10 / $50 per 1M tokens. With Somnus's 2×+ credit it effectively costs $5 / $25 or less.
Cheap GPT-6 Luna API from $0.05 / $0.25
GPT-6 Luna by OpenAI lists at $0.1 / $0.5 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.05 / $0.25 or less.
Cheap GPT-5.6 Sol API from $2.5 / $15
GPT-5.6 Sol by OpenAI lists at $5 / $30 per 1M tokens. With Somnus's 2×+ credit it effectively costs $2.5 / $15 or less.
Cheap GPT-5.6 Luna API from $0.5 / $3
GPT-5.6 Luna by OpenAI lists at $1 / $6 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.5 / $3 or less.
Cheap Gemini 4 Argon API from $1 / $5
Gemini 4 Argon by Google lists at $2 / $10 per 1M tokens. With Somnus's 2×+ credit it effectively costs $1 / $5 or less.
Cheap Gemini 3.1 Pro API from $1 / $6
Gemini 3.1 Pro by Google lists at $2 / $12 per 1M tokens. With Somnus's 2×+ credit it effectively costs $1 / $6 or less.
Cheap Gemini 3.8 Flash API from $0.375 / $1.875
Gemini 3.8 Flash by Google lists at $0.75 / $3.75 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.375 / $1.875 or less.
Cheap Grok 4.7 API from $1 / $3
Grok 4.7 by xAI lists at $2 / $6 per 1M tokens. With Somnus's 2×+ credit it effectively costs $1 / $3 or less.
Cheap DeepSeek V4.1 Flash API from $0.075 / $0.3
DeepSeek V4.1 Flash by DeepSeek lists at $0.15 / $0.6 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.075 / $0.3 or less.
Cheap DeepSeek V4 Pro API from $0.33 / $0.99
DeepSeek V4 Pro by DeepSeek lists at $0.66 / $1.98 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.33 / $0.99 or less.
Cheap DeepSeek V4 Flash API from $0.11 / $0.33
DeepSeek V4 Flash by DeepSeek lists at $0.22 / $0.66 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.11 / $0.33 or less.
Cheap Kimi K3 API from $1.5 / $7.5
Kimi K3 by Moonshot lists at $3 / $15 per 1M tokens. With Somnus's 2×+ credit it effectively costs $1.5 / $7.5 or less.
Cheap GLM 5.3 API from $0.7 / $2.2
GLM 5.3 by Zhipu lists at $1.4 / $4.4 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.7 / $2.2 or less.
Cheap Qwen 3.8 Max API from $0.825 / $2.475
Qwen 3.8 Max by Alibaba lists at $1.65 / $4.95 per 1M tokens. With Somnus's 2×+ credit it effectively costs $0.825 / $2.475 or less.
Cheap AI API: model prices & workload costs
Compare Somnus AI API input and output prices, estimated costs for 1,000 tasks, and how prepaid 2× credit changes effective cost. No subscription.
Cheap LLM API | 23 models
Cheap LLM API: 23 models on one key, every top-up credited 2×+. Claude Haiku 5.5 from $0.05 / $0.25 per 1M tokens.
Cheap AI API for coding | 19 models
Cheap AI API for coding: 19 models on one key, every top-up credited 2×+. Claude Haiku 5.5 from $0.05 / $0.25 per 1M tokens.
Cheap reasoning model API | 16 models
Cheap reasoning model API: 16 models on one key, every top-up credited 2×+. GLM 5.3 from $0.7 / $2.2 per 1M tokens.
Cheap Chinese AI model API | 6 models
Cheap Chinese AI model API: 6 models on one key, every top-up credited 2×+. DeepSeek V4.1 Flash from $0.075 / $0.3 per 1M tokens.
Cheap OpenAI-compatible API | 23 models
Cheap OpenAI-compatible API: 23 models on one key, every top-up credited 2×+. Claude Haiku 5.5 from $0.05 / $0.25 per 1M tokens.
AI API with free credit | 10 models
AI API with free credit: 10 models on one key, every top-up credited 2×+. Claude Haiku 5.5 from $0.05 / $0.25 per 1M tokens.