Articles and updates
How AI API pricing works, and how to spend less on every token.
Claude Sonnet 5.5 Is Now Live on GreenTokens at 50% Off
Anthropic's Claude Sonnet 5.5 is available on GreenTokens today at half its list price. Prices, model ID, what changed from Sonnet 5, and how to start.
Cheap AI API: How to Get AI Models at Discounted Prices
Direct APIs, subscriptions, free tiers, budget models and discounted gateways: what each really costs, where the catch is, and how to combine them.
Pricing27 Sept 2026 · 6 minLLM API Pricing Comparison 2026: Claude, GPT, Grok & More
Input, output and cached-token prices for 12 popular models side by side, what a real workload costs on each, and how to find the cheapest LLM API for your use.
Pricing26 Sept 2026 · 7 minCheapest OpenAI API Model: GPT-6 and GPT-5.6 Prices Compared
Every current GPT model's API price side by side, which one is cheapest for which job, and how to pay up to 60% less for the same models.
Pricing25 Sept 2026 · 6 minCheap Claude API: Claude Opus, Sonnet & Haiku at 50% Off
Claude's official API prices, the cheapest way to get the same Claude models, and how to cut the bill further with the right model and prompt caching.
Pricing24 Sept 2026 · 6 minGPT-6 Luna and Sol Are Now Live on GreenTokens
OpenAI's GPT-6 Luna and GPT-6 Sol are available on GreenTokens today, with GPT-6 Sol at 60% below list price. Prices, model IDs and how to start.
Releases23 Sept 2026 · 5 minGrok 4.7 Is Now Available on GreenTokens at 50% Off
xAI's Grok 4.7 is available on GreenTokens today at half its list price. Prices, model ID, how it compares with earlier Grok models, and how to start.
Releases22 Sept 2026 · 5 minSave Money on AI API Costs: Discounted Model Tokens
Where AI API bills really come from, why the same model can cost less through a gateway, and how to check a discounted provider before you switch.
Pricing21 Sept 2026 · 5 minOne API for All AI Models: How a Unified LLM API Works
Why teams are moving to one API for every AI model, how a unified LLM API works under the hood, what to look for, and the trade-offs to know about.
Explainers20 Sept 2026 · 6 minWhat Is Prompt Caching and How Does It Work?
How prompt caching reuses repeated context, what cache writes and reads cost, how to structure prompts to hit the cache, and how much it saves.
Learn19 Sept 2026 · 6 minHow Does AI API Pricing Work? Tokens, Images & Video
How AI APIs charge for text, images and video, what drives the bill, how to estimate a workload before you build, and how to keep costs predictable.
Learn16 Sept 2026 · 7 minWhat Is an LLM API? A Beginner's Guide
What an LLM API is, what happens in a single API call, the formats you'll meet, and how to make your first request in a few lines of Python.
Learn12 Sept 2026 · 7 minWhat Is a Context Window in an LLM?
What a context window is, what fills it, what happens when it runs out, and why a bigger context window isn't free.
Learn9 Sept 2026 · 6 minWhat Is a Token in AI? Tokens in LLMs Explained
What tokens are, how text becomes tokens, how many words a token is, and why tokens decide what every AI API call costs.
Learn4 Sept 2026 · 6 min