Side-by-side comparison of per-token costs, billing models, and savings across the three main ways to access the OpenAI API.
Before comparing numbers, it helps to understand how each provider structures its billing. The pricing model determines not just what you pay, but how you pay, when you pay, and what controls you have over spending.
Postpaid, pay-per-token. You use the API, OpenAI bills your credit card at the end of the month based on actual usage. No upfront commitment, but no hard spending cap — costs can exceed your expectations if usage spikes.
Credit-based pay-as-you-go. You preload funds, then draw against your balance. 0% markup on most models — same per-token cost as OpenAI direct. The value is in model aggregation: 500+ models from 80+ providers through one API key.
Prepaid token packs, bulk discount. You buy a monthly token allocation at a reduced rate. The per-token cost drops as pack size increases, and one API key covers 30+ models across GPT, Claude, DeepSeek, Gemini, and more.
The table below compares per-token costs across the three providers for the most commonly used OpenAI models. APItokendeal prices are based on the Pro pack ($0.60/MTok base) multiplied by each model's weight.
| Model | OpenAI Direct (In/Out) | OpenRouter (In/Out) | APItokendeal Pro (In/Out) |
|---|---|---|---|
| GPT-5.4 Mini | $0.75 / $4.50 | $0.75 / $4.50 | ~$0.60 / ~$3.60 |
| GPT-5.4 | $2.50 / $15.00 | $2.50 / $15.00 | ~$1.20 / ~$12.00 |
| GPT-5.6 Sol | $5.00 / $30.00 | $4.00 / $20.00 | ~$3.00 / ~$24.00 |
| GPT-6 Astra | $10.00 / $50.00 | $10.00 / $50.00 | ~$6.00 / ~$48.00 |
| GPT-5.3 Codex Spark | $1.75 / $14.00 | $1.75 / $14.00 | ~$1.05 / ~$11.20 |
All prices in USD per million tokens. APItokendeal prices are approximate and based on the Pro pack rate. OpenRouter charges 0% markup on most models. OpenAI Direct pricing as of September 2026.
Price per token is only part of the story. How you are billed — and what controls you have — matters as much as the rate itself.
| Feature | OpenAI Direct | OpenRouter | APItokendeal |
|---|---|---|---|
| Billing type | Postpaid | Credit (preloaded) | Prepaid token packs |
| Payment methods | Credit card | Credit card, crypto | Credit card (Stripe), USDT |
| Spending ceiling | Soft limit (can exceed) | Credit balance | Hard ceiling (cannot exceed) |
| Free tier | $5–$18 credit | Rate-limited free | 2.5M tokens free |
| Models available | OpenAI only | 500+ from 80+ providers | 30+ models (GPT, Claude, DeepSeek, Gemini, etc.) |
| Prompt caching | 90% off cached input | Varies by provider | Not available |
| Batch API | 50% off | Varies | Not available |
| Minimum purchase | None | None | $9.99 |
You need guaranteed uptime SLA, prompt caching, batch API, or enterprise compliance. OpenAI direct is the right choice for production applications where cost is secondary to reliability. You get access to the full feature set — including prompt caching at 90% off cached input, the batch API at 50% off, and direct support from OpenAI. If your workload is large enough that prompt caching or batch processing meaningfully reduces costs, the savings can offset the higher per-token rate.
You need the widest model selection (500+ models from 80+ providers), model routing, automatic fallbacks, or want to compare providers side by side. OpenRouter is the best choice for experimentation and multi-model workflows. The credit-based billing means you prepay but get the same per-token rate as going direct. Where OpenRouter shines is flexibility: you can switch between GPT, Claude, Gemini, Mistral, Llama, and dozens of other models without changing your API key or code.
You want predictable costs with no surprise bills, need one key for GPT + Claude + DeepSeek + Gemini, and prefer prepaid over postpaid billing. APItokendeal is best for individual developers, small teams, and cost-conscious production workloads. The prepaid token pack model gives you a hard spending ceiling — you cannot exceed your balance — and the bulk discount means per-token costs are 20–50% lower than OpenAI direct. The tradeoff is losing access to prompt caching and batch API, which are OpenAI-specific features.
Abstract per-token rates are hard to translate into real budgets. Here are three common usage scenarios with actual monthly costs.
10M input tokens + 2M output tokens per month on GPT-5.4.
| Provider | Plan | Monthly cost |
|---|---|---|
| OpenAI Direct | — | $55.00 |
| OpenRouter | Pay-as-you-go | $55.00 |
| APItokendeal | Starter | $24.99 (save $30) |
50M input + 10M output tokens per month on GPT-5.4 Mini.
| Provider | Plan | Monthly cost |
|---|---|---|
| OpenAI Direct | — | $82.50 |
| OpenRouter | Pay-as-you-go | $82.50 |
| APItokendeal | Pro | $59.99 (save $22.50) |
20M input + 5M output tokens per month, split across multiple models.
| Provider | Plan | Monthly cost |
|---|---|---|
| OpenAI Direct | 3 separate accounts needed | ~$120.00 |
| OpenRouter | One account | ~$95.00 |
| APItokendeal | One key, Pro pack | $59.99 (save $35–$60) |
Yes, 20–50% cheaper depending on the model and pack size. APItokendeal's prepaid token model means lower per-token rates across the board, with the discount increasing as you move to larger packs. The savings are largest on higher-cost models like GPT-5.6 Sol and GPT-6 Astra.
OpenRouter charges 0% markup on most models, so the per-token cost is effectively the same as OpenAI direct. The difference is in billing structure (credit-based vs postpaid) and model access (500+ models vs OpenAI only). You do not save money per token, but you gain flexibility.
Yes. Because APItokendeal uses the OpenAI-compatible chat completions protocol, switching takes two changes: set base_url to the APItokendeal endpoint and replace your API key. Your code, prompts, and model names stay the same.
No catch. Tokens expire after 90 days of complete inactivity (no usage at all), so regular use keeps them valid. The prepaid model means a hard spending ceiling — you literally cannot exceed your balance, which eliminates surprise bills.
All three work with coding agents like Codex, Claude Code, Cline, and OpenCode. APItokendeal offers the best price for GPT-5.4, which most agents use by default. OpenRouter is best if you need automatic model routing or fallbacks across providers. OpenAI Direct is best if you need a guaranteed uptime SLA for production agent deployments.
Compare APItokendeal with other AI API providers:
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