Docs · Comparisons
TopxAI vs OpenRouter: what is the same and what differs
Compare TopxAI and OpenRouter model prices, routes and API formats, with dated sources and the current Kimi K3.1 Pro pricing scope.
Both services put many providers' models behind one endpoint and one balance. The differences are in how many models, what a token costs, and what else is on offer. This page states what each side publishes; OpenRouter's numbers are from their documentation on 2026-09-24, with GPT-6.1 Sol rechecked on 2026-09-30 and Sonnet 5.5 on 2026-10-02, and may change.
October 24, 2026 update: TopxAI replaced deepseek-flash with the private deployment deepseek-flash-Abliterated. Its fixed input / cache-read / output rates are $1.20 / $0.15 / $2.40 per million tokens. It is a different deployment from official DeepSeek Flash, so this page does not make a like-for-like price comparison for it. The dated competitor prices below have not been rechecked in this update.
October 24, 2026 Kimi update: Kimi K3.1 Pro replaces K3 at the same TopxAI prices: $2.40 input and $12 output per million tokens. These equal 120% of Kimi’s newly verified $2 / $10 official reference, or 20% higher. The predecessor’s competitor quotes have been removed; no quote for this successor on OpenRouter was verified in this update. Kimi official pricing.
Side by side
| TopxAI | OpenRouter | |
|---|---|---|
| Models | Seven lines: Claude, GPT, Grok, GLM (private deployment), Kimi, DeepSeek, Jev | Hundreds, from most providers |
| Token price | Claude/GPT/Grok shared routes at 50% of the listed provider reference, their official routes at 90%; Kimi K3.1 Pro 120%; deepseek-flash-Abliterated at fixed private-deployment rates; Jev 107%; GLM is a different private fine-tune |
Varies by provider, route and promotion; not always the model vendor's list price |
| Fee on top-up | None: the amount credited is the amount you enter (regional tax may be added at checkout) | Standard lists a 5.5% platform fee; payment conditions and other plans differ (pricing) |
| API formats | OpenAI Chat Completions and Responses, Anthropic Messages, Images, video, /v1/systemone |
OpenAI-style API; see their docs for what else is supported |
| Routing | Auto route picks the lowest-priced of TopxAI's own routes for the model; per-route keys pin a line | Routes across providers, with fallbacks and provider preferences |
| Prompts and completions | Relayed in memory, never stored | Their privacy page describes logging options and zero-retention routes |
| Extras | Usage log per request with route and charge; gift cards; shared sign-in with topxea.com | Web search plugin, presets, app attribution, provider analytics |
| Free start | None at sign-up; every top-up earns a 3–12% bonus by amount, the first one 10% more | Free-tier models |
Current price examples
Checked on September 24, 2026 against the TopxAI price API, OpenRouter model API and the linked provider pages. The GPT-6.1 Sol comparison was updated on September 30 against its OpenRouter model page. Sonnet 5.5 was rechecked on October 2 against Anthropic's model page and OpenRouter's Sonnet 5.5 standard routes; both list $2 input / $10 output, and Anthropic lists no long-context premium. Prices below are USD per million tokens, shown as input / output, for standard online requests below any applicable long-context threshold. They exclude platform fees, taxes, cache tokens and tool charges; Batch, Flex and priority processing are separate service tiers.
| Model | TopxAI route | TopxAI input / output | OpenRouter standard input / output | Comparison |
|---|---|---|---|---|
| Claude Sonnet 5.5 | Shared | $1 / $5 | $2 / $10 | TopxAI 50% lower |
| Claude Opus 5.5 | Shared | $2 / $10 | $4 / $20 | TopxAI 50% lower |
| Claude Fable 5.1 | Shared | $5 / $25 | $10 / $50 | TopxAI 50% lower |
| GPT-6 Astra | Shared | $5 / $25 | $10 / $50 | TopxAI 50% lower |
| GPT-6.1 Sol | Shared | $1 / $5 | $2 / $10 | TopxAI 50% lower |
| Grok 4.7 | Shared | $1 / $3 | $1.60 / $4.80 | TopxAI 37.5% lower |
The official routes sell at 90% of the provider list price. Sonnet 5.5's official route is $1.80 input / $9 output, 10% below the standard $2 / $10 comparison above. For the other Claude and GPT models above that is also 10% below OpenRouter's standard routes; for Grok 4.7 the official route ($1.80 / $5.40) is 12.5% above it, because OpenRouter sells Grok 4.7 below xAI's $2 / $6 list price. OpenRouter's GPT-6.1 Sol and GPT-6 Astra pages also list OpenAI Flex endpoints at half price; Flex is not standard routing.
These savings apply to the shared routes and comparison prices listed above, not to every TopxAI model or route. Auto routing can select a different-priced route; inspect the billed route in the usage log. Provider Batch/Flex discounts, cache hit rates, long-context tiers and retries can change an actual workload's bill. These are public price comparisons, not a paid performance or billing benchmark. Recheck the live ledgers before purchasing.
Where TopxAI is the better fit
- You use a handful of the big models and the price per token matters: on the shared pool,
claude-sonnet-5-5is $1 input / $5 output per 1M tokens against a $2 / $10 list price (model page). - You want the Anthropic Messages format, not only an OpenAI-style one, for Claude Code, the Anthropic SDK or any tool that speaks it.
- You want a fixed, published price per route and a log row per request that shows which route it took.
- You want nothing stored: no prompt, no completion, no file.
Where OpenRouter is the better fit
- You need a model TopxAI does not sell: an open-weight model, a small vendor, or the latest release before it reaches the catalogue.
- You want cross-provider fallbacks or a preference for a particular hosting provider.
- You rely on their extras: web search in the request, presets, or per-app analytics.
- Your chosen provider has a lower current price for the model you need; compare the actual route, not only the vendor’s reference price.
Using both
Nothing prevents it. Both are OpenAI-compatible, so a client that takes a base URL and a model id switches with two values. A LiteLLM or opencode configuration can list TopxAI models next to OpenRouter models under separate provider names (LiteLLM page, opencode page).
Models: claude-sonnet-5-5, gpt-6.1-sol, kimi-k3.1-pro · Models & pricing
Related
- Every model's price
- LLM API price calculator
- Shared pool, official line and auto route
- TopxAI vs the providers' own APIs: price, retention and what stays direct
- What TopxAI stores and what it never stores
- TopxAI vs Vercel AI Gateway: list price with no markup, or half of it
- Claude Sonnet 5.5 API pricing
- GPT-6.1 Sol API pricing
- Kimi K3.1 Pro API pricing
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