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OpenAI·Text60%+ off vs official

GPT-5.6 SolAPI

OpenAI's newest flagship — top-tier reasoning and agentic coding.

GPT-5.6 Sol is a text model from OpenAI. Its context window is 1,050,000 tokens, with up to 128,000 output tokens per request. Through Kunavo it costs $2.00 per 1M input tokens and $12.00 per 1M output tokens — about 60% under OpenAI's official price, read live from the catalog. Calls go to POST /v1/chat/completions on the OpenAI-compatible API.

Input price

$2.00

per 1M tokens

Output price

$12.00

per 1M tokens

Single upstreamServed through one supplier today. If that supplier has an outage, calls fail until it recovers — failed calls are never billed. We're adding a second supplier to every text model.

The provider is currently charging a promotional $20 per 1M output tokens, at least until 2026-11-21. The discount shown is against its list price; against the promotional price, Kunavo is 40% lower.

Prompt caching

Pass cache_control on a stable prefix and cache hits bill at a fraction of input. Cache writes bill at the vendor's write rate — 1.25× input on Claude and GPT-5.6+, the input rate elsewhere.

Cache read
$0.2
Cache write
$2.5

Auto-derived from input × 0.1

Prompts over 272K tokens bill the whole request at $4 in / $18 out per 1M.

Specs

Model ID
gpt-5-6-sol
Endpoint
POST /v1/chat/completions
Category
Text
Provider
OpenAI
Context window (tokens)
1,050,000
Max output (tokens)
128,000
Capabilities
Tool callingStreamingReasoningLong context
Cache read / write (× input)
×0.1 / ×1.25
Official tier
promo $4/$20 to at least Nov 21, 2026

Drop-in OpenAI compatibility

Point your existing OpenAI SDK at api.kunavo.com/v1 and swap the model id. No streaming changes, no SDK changes.

View docsGPT API pricing guideEstimate what GPT-5.6 Sol costs for your workload

Try it

Set KUNAVO_API_KEY from /app/keys, then run any of the snippets below.

curl
curl https://api.kunavo.com/v1/chat/completions \
  -H "Authorization: Bearer $KUNAVO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5-6-sol",
    "messages": [
      {"role": "user", "content": "Hello, GPT-5.6 Sol"}
    ],
    "stream": false
  }'

OpenAI's other models on Kunavo

ModelPriceContext window
GPT-6 Astra$4.00 / $20.00 per 1M tokens1,050,000
GPT-6 Sol$0.80 / $4.00 per 1M tokens1,050,000
GPT-6 Luna$0.04 / $0.20 per 1M tokens1,050,000
GPT-5.6 Terra$0.70 / $4.20 per 1M tokens1,050,000
GPT-5.5$2.00 / $12.00 per 1M tokens1,050,000

Kunavo vs calling OpenAI directly

Same GPT-5.6 Sol weights, same responses. What a gateway changes is the account, the SDK and the bill — here is the honest side-by-side.

KunavoOpenAI direct
Price (per 1M tokens)$2.00 / $12.00 (−60%)$5.00 / $30.00 list · $4.00 / $20.00 promotional now, at least until 2026-11-21
AccountOne Kunavo account, key in 2 minutes, $10 minimum top-upA OpenAI account plus its own billing setup
SDKKeep the OpenAI SDK — change base_url, set model to "gpt-5-6-sol"OpenAI's SDK, or their OpenAI-compatible layer where offered
Same key also reachesClaude, GPT, image, video and audio modelsOpenAI's own catalog only
BillingOne prepaid balance, pay-as-you-go, never expires; failed requests unbilledA separate invoice per provider
Rate limitsShared gateway capacity, no contractual per-account limitOpenAI's own tier limits, raised by usage history or contract

Go direct to OpenAI when you need a contractual rate limit, an enterprise SLA, or a provider-only feature on day one. Use Kunavo when you want one key, one balance and a lower per-token rate across every provider.

Frequently asked questions

How much does GPT-5.6 Sol cost?

On Kunavo, GPT-5.6 Sol is $2.00 per 1M input tokens and $12.00 per 1M output tokens — about 60% under OpenAI's official price. Failed requests are never billed, and you pay as you go only for successful calls.

Can I call GPT-5.6 Sol with the OpenAI SDK?

Yes. Set base_url to https://api.kunavo.com/v1, use your Kunavo key, and set model to "gpt-5-6-sol". Requests and responses are OpenAI-compatible.

What endpoint does GPT-5.6 Sol use?

Call GPT-5.6 Sol through POST /v1/chat/completions on Kunavo’s OpenAI-compatible API.

What is GPT-5.6 Sol good for?

GPT-5.6 Sol is a text model from OpenAI, with support for Tool calling, Streaming, Reasoning, and Long context.

What is different from calling OpenAI directly?

The model is the same — about 60% under OpenAI's official price. The surrounding setup changes: one key and one prepaid balance replace a OpenAI account and its billing, you can use the OpenAI SDK by changing base_url, and the same key also reaches Claude, GPT, image, video and audio models. Gateway capacity is shared. If your use case requires provider-negotiated limits for GPT-5.6 Sol, contact OpenAI directly.

Is GPT-5.6 Sol cheaper on Kunavo?

Yes. GPT-5.6 Sol is about 60% below OpenAI’s official list price on Kunavo, with no subscription or monthly minimum. You pay for successful usage, starting with a $10 top-up; failed requests are never billed and your balance never expires.

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