Multi-provider API guides
Claude, GPT, Gemini & Kimi API Guides
Practical guides for buying, configuring and choosing Claude, GPT, Gemini and Kimi APIs with one apiToken.sale key — pricing, models, SDKs, coding agents and images.
69 guides
Buying a key
Get one API key for Claude, GPT, Gemini and Kimi, then start in minutes.
How to buy a Claude API keyBuy a Claude API key in minutes: card or crypto checkout, one key for every Claude model at a flat 50% off — no Anthropic account required.How to buy a GPT API keyBuy a GPT API key without an OpenAI account: prepaid balance, card or crypto checkout, and GPT-5.6, GPT-5.5 and GPT Image 2 at 50% off official rates.How to buy a Gemini API keyBuy a Gemini API key without a Google Cloud billing account: top up by card or crypto and call native generateContent at 50% off official spend.How to buy a Kimi API keyHow to buy a Kimi API key: one prepaid key covers K3 and Kimi for Coding at 50% of official rates — pay by card or crypto, get a $5 welcome bonus.The cheapest way to use the Claude APIThe cheapest Claude API: the identical Anthropic Messages API at a flat 50% off official spend. Prepaid balance, no subscription, every Claude model discounted.Using the Claude API from RussiaAccess the Claude API from Russia and other restricted regions with apiToken.sale — no Anthropic account, pay by card or crypto, one key for every Claude model.Pay for the Claude API with cryptocurrencyBuy Claude API balance with USDT, BTC or a bank card on apiToken.sale. No Anthropic account, instant activation, prepaid balance that never expires.Claude API access with no waitlistSkip the Anthropic waitlist and approval. Create an account on apiToken.sale, generate a Claude API key, and make your first call in minutes.
Free & low cost
Try supported models across all four providers before you top up.
Get a free Claude API key in minutesGet a free Claude API key with $5 of bonus credit: sign up with Google or GitHub, no card and no Anthropic account — call every Claude model.Try the Claude API freeStart coding with Claude in minutes. New accounts created with Google or GitHub get $5 of platform bonus credit, with no card required.Claude Code without the $200/month planUse Claude Code without a subscription: point ANTHROPIC_BASE_URL at router.apitoken.sale and pay per token from prepaid balance at 50% off official rates.Claude Opus 4.8 through the APIClaude Opus API access on one apiToken.sale key: Opus 4.8 and 4.7 at a flat 50% off — $2.50/$12.50 per 1M tokens. Prepaid, no Anthropic account.Claude Sonnet API access: Sonnet 5 and Sonnet 4.6Claude Sonnet API access via apiToken.sale: Sonnet 5 and 4.6 model IDs, Messages API examples and prompt caching at a flat 50% off official rates.Claude Haiku 4.5 through the APIClaude Haiku API access via apiToken.sale: the claude-haiku-4-5 model ID, a working Messages API call and pricing at a flat 50% off official rates.How to find the cheapest image generation APICheapest image generation API for your workload: Nano Banana 2 vs GPT Image 2 on settled usage, acceptance rate and the 50% B2C discount.
Tool setup
Connect native APIs, SDKs, coding agents and image routes.
Claude API quickstart: set up and make your first callClaude API quickstart: create one key, point any Anthropic-compatible client at router.apitoken.sale and send your first /v1/messages request in minutes.OpenAI-compatible API quickstart: from curl to the official SDKOpenAI-compatible API quickstart: GPT-6 Astra / GPT-5.6 on apiToken.sale via Responses and Chat Completions with SSE streaming — one key, balance shared with Claude, 50% off.Gemini API quickstart: first call with curl and the Google GenAI SDKGemini API quickstart: make your first call through apiToken.sale with curl or the Google GenAI SDK — native generateContent, SSE streaming, 50% off.Kimi API quickstart: first call with curl or the Anthropic SDKKimi API quickstart: first call to Kimi K3 or Kimi for Coding with curl or the Anthropic SDK — x-api-key auth, kimi/* model IDs, 50% off official rates.Run Claude Code on an apiToken.sale API keyGet a Claude Code API key without an Anthropic subscription: set ANTHROPIC_BASE_URL and ANTHROPIC_API_KEY and run every Claude model at a flat 50% off.Codex CLI setup: a custom provider profile for apiToken.saleCodex CLI setup without a ChatGPT login: one model_providers profile points Codex at apiToken.sale and runs GPT-6 Astra / GPT-5.6 on prepaid balance at 50% off.Run Kimi K3 and Kimi for Coding in OpenCodeKimi API for OpenCode: set up the apiToken.sale router plugin with a key-scoped live catalog, apitoken/kimi/* model IDs and one prepaid key at 50% off.Run Kimi K3 and Kimi for Coding in Claude CodeKimi API for Claude Code: point Claude Code at Kimi K3 or Kimi for Coding via apiToken.sale, pin every model tier, keep the 1M context window, pay 50% less.Run Kimi, Claude, GPT and Gemini in Kimi CodeKimi Code API: set up an OpenAI-compatible provider for apiToken.sale — exact config.toml provider and models tables, namespaced IDs and context windows.Generate and edit images with the GPT Image 2 APIUse GPT Image 2 for image generation and editing through apiToken.sale: exact endpoint, model ID, reference-image limits, token pricing and a 50% discount.Generate and edit images with GPT Image 2.5 Flare and SunburstUse GPT Image 2.5 Flare and Sunburst for image generation and editing through apiToken.sale: exact endpoints, model IDs, live-proved quality/size/alpha conversion, token pricing and a 50% discount.Edit images through GPT Image 2 or Nano Banana 2Image editing API guide: build a production edit workflow on GPT Image 2 or Nano Banana 2 — reference contracts, cost math, validation, safe retries.Build a batch image generation pipeline that cannot overrun its budgetBatch image generation API done safely: durable queues, idempotency, bounded concurrency, 500-SKU cost math and key-level spending limits.An image generation API workflow for ecommerce catalogsEcommerce image generation API workflow: product photos with Nano Banana 2 or GPT Image 2 — identity-safe edits, batch controls, cost math, SEO.Use a Claude API key in CursorGet a Claude API key for Cursor with no Anthropic account: point Cursor's Anthropic provider at router.apitoken.sale and code at a flat 50% off official rates.Use the Claude API in VS CodeRun the Claude API in VS Code with Cline or Continue: set the Anthropic base URL to router.apitoken.sale, paste your key, and pay per token at 50% off.Run Claude in Cursor without an Anthropic accountNo Anthropic account? Use Claude in Cursor with an apiToken.sale key instead. Instant access, card or crypto payment, and a flat 50% off official API rates.Point the Anthropic SDK at apiToken.saleSet the Anthropic SDK base URL to router.apitoken.sale: same Python and TypeScript code, same model IDs, and a flat 50% off every token.Use the Claude API with LangChainConnect LangChain to Claude through apiToken.sale: point ChatAnthropic at router.apitoken.sale, keep the same model IDs, and pay 50% less per token.Use the Claude API with LiteLLMUse the Claude API with LiteLLM: keep the anthropic/ prefix, point api_base at router.apitoken.sale, and pay 50% less per token.Use the Claude API with AiderUse the Claude API with Aider: export ANTHROPIC_API_BASE pointing at router.apitoken.sale, pick a Claude model, and pair-program at a flat 50% off.Use the Claude API with Roo CodeUse the Claude API with Roo Code: pick the Anthropic provider, enable the custom base URL router.apitoken.sale, paste your key and code at 50% off.Run free VS Code AI agents on ClaudeFree VS Code AI agents like Cline and Roo Code on Claude — no Cursor Pro needed. One apiToken.sale key, every Claude model, at a flat 50% off official rates.Keep your Claude API key secureClaude API key security: storage rules, lifetime spending limits, the safe rotation order, and what to do in the first ten minutes after a leak.
Compare
How apiToken.sale stacks up against the alternatives.
Claude Opus vs Sonnet: which model should you use?Claude Opus vs Sonnet, decided by task: Sonnet 5 for coding and agents, Opus 4.8 for hard reasoning — $1/$5 vs $2.50/$12.50 per 1M tokens here.GPT-5.6 Sol vs Terra vs Luna: pick by task, not by loyaltyGPT-5.6 Sol vs Terra vs Luna compared: official and discounted prices per 1M tokens, shared 1.05M-token context and reasoning effort — all three tiers on one key.Gemini Pro vs Flash vs Flash-Lite: pick the right tier per requestGemini Pro vs Flash vs Flash-Lite compared: real input rates from $0.10 to $2 per 1M, context behavior, cache pricing — all three tiers on one key at 50% off.Kimi K3 vs Kimi for Coding: which model for which workloadKimi K3 vs Kimi for Coding compared: 256K vs 1M context, tunable reasoning vs always-on thinking, High Speed's double rate and a two-tier routing policy.apiToken.sale vs buying from Anthropic directlyCompare apiToken.sale and Anthropic direct: identical Messages API and models, but with a flat 50% off, no account requirement, and card or crypto payment.apiToken.sale vs OpenRouter: which Claude gateway fits your stackAn honest OpenRouter alternative comparison for Claude users: native Anthropic Messages API and a flat 50% discount vs a multi-provider routing layer.apiToken.sale vs ProxyAPIComparing Claude API resellers: apiToken.sale offers a native Anthropic endpoint with a flat 50% discount, card or crypto payment, and one key for every model.apiToken.sale vs Portkey: key supplier vs AI gatewayPortkey alternative for Claude: Portkey routes keys you already own; apiToken.sale supplies the Claude key itself at 50% off. When to use each — or both.apiToken.sale vs LiteLLMLiteLLM is a self-hosted proxy over keys you fund at list price; apiToken.sale is a hosted endpoint with a flat 50% discount. Compare both — or combine them.The best Claude model for codingBest Claude model for coding, picked per task: Sonnet 5 by default, Opus 4.8 for hard refactors, Haiku 4.5 for volume — one key at a flat 50% off.Claude Max subscription vs the APIClaude Max plan vs the Claude API: what the $100/$200 subscription buys, where it stops, and when pay-as-you-go tokens at 50% off are the better deal.Claude 3.5 vs Claude 4: what changedClaude 3.5 vs Claude 4: what improved, the model-ID mapping from claude-3-5-sonnet to the current line, and the one-line migration on apiToken.sale.Why choose apiToken.saleWhy developers use one apiToken.sale key for Claude, GPT, Gemini and Kimi: native or compatible APIs, 50% off B2C pricing, and card or crypto payment.
How it works
Pricing, billing, activation and support, explained.
How Claude API pricing worksUnderstand Claude API pricing: per-token input and output rates, prompt caching, and how apiToken.sale applies a flat 50% discount.GPT API pricing: input, cache, output and long contextGPT-6 Astra, GPT API pricing explained: GPT-5.6 Sol, Terra and Luna rates per 1M tokens, cache pricing, the 272K long-context multiplier and a flat 50% discount.Gemini API pricing: Pro, Flash, Flash-Lite and image outputGemini API pricing explained: Pro, Flash and Flash-Lite token rates, cached input, the 200K context premium and a flat 50% discount on apiToken.sale.Kimi API pricing: cache hits, misses, output and speedUnderstand Kimi API pricing for K3, Kimi for Coding and High Speed: cache-hit, cache-miss and output rates, alias mapping and apiToken.sale's 50% discount.How image generation API pricing actually worksImage generation API pricing explained: usage legs, official token rates, fixed 1K/2K/4K image costs, cached input and the 50% B2C discount.GPT Image 2 API cost and 50% B2C savingsGPT Image 2 API cost from real usage legs: official $5/$8/$30 per 1M tokens, a flat 50% B2C discount and worked per-request cost math.How to save tokens on the Claude APIHow to save tokens on the Claude API: prompt caching, per-task model routing and tighter context — practical tactics that stack with a flat 50% off.How billing worksHow apiToken.sale billing works: one prepaid balance for Claude, GPT, Gemini and Kimi, metered per request at official rates with a flat 50% discount.How fast your Claude API key activatesClaude API activation time on apiToken.sale is zero — the key works on the next request. Card top-ups clear in seconds; no waitlist, no review.Where the Claude API works — and what actually gates itClaude API supported countries: Anthropic gates direct accounts by billing country; apiToken.sale has no such gate — pay by card or crypto anywhere.Claude API refund policy: balance, refunds and supportClaude API refund policy on apiToken.sale: unspent top-ups are refundable within 5 calendar days via the original payment provider; balance never expires.What a Claude API gateway is, and when you need oneWhat a Claude API gateway does: native Anthropic Messages API, per-key spending limits, and a flat 50% B2C discount — no Anthropic account needed.Understanding Claude API rate limitsWhat a 429 means on apiToken.sale, how Claude API rate limits measure requests and tokens per minute, and how to retry with Retry-After and exponential backoff.Claude API streaming: SSE responses, token by tokenClaude API streaming on apiToken.sale: one stream:true flag, the standard Anthropic SSE event sequence, and billing identical to non-streaming.Claude API prompt caching: how it works and what it savesClaude prompt caching: cache reads cost 0.1× the input price (0.05× with the apiToken.sale discount). Breakpoints, TTLs and the pricing math.Claude API best practicesClaude API best practices for production: route tasks to Haiku, Sonnet or Opus, cache repeated context, stream responses, and cap keys with spending limits.Using the Claude API for AI agentsBuild AI agents on the Claude API: one key for every model, tool use and streaming, prompt caching, and a lifetime spending limit to stop runaway loops.