Cheap Claude Opus 4.8 API: Discounted Prices and Access

Claude Opus 4.8 from $0.6445829 input / $3.2229145 output per million tokens. Compare Anthropic, Batch, Opus 5.5 and realistic task budgets.

Claude Opus 4.8cheap Opus 4.8 APIClaude API pricingAPIMaster

Published 2026-11-09 · Updated 2026-11-10

Quick Answer

Claude Opus 4.8 starts at $0.6445829 input / $3.2229145 output per million tokens on APIMaster: up to about 87.1% below Anthropic Standard. There are 14 public active routes. Open the Opus 4.8 card to compare offers for the exact model, rather than accidentally buying a different Opus version.

Checked November 9, 2026 (UTC+8). USD per million input / output tokens, uncached. Counts exclude client-exclusive routes. Ranges pair the lowest- and highest-input-priced public routes. The live marketplace card controls price and availability.

Model ID	Original price	APIMaster current price	Active routes	Discount	Model card
`claude-opus-4-8`	$5 / $25	From $0.6445829 / $3.2229145; range up to $12 / $60	14	Up to about 87.1% off	Get Opus 4.8
`claude-opus-5-5`	$4 / $20	From $1.340784 / $6.70392; range up to $2.6729706 / $13.364853	4	Up to about 66.5% off	Compare Opus 5.5

Not every Opus 4.8 route is discounted: the highest quoted route exceeds Standard. Choose by the actual offer and required features, not the route count alone.

Opus 4.8 API pricing: Anthropic vs Batch vs APIMaster

Anthropic's pricing documentation lists Opus 4.8 Standard at $5 input / $25 output per million tokens. Batch offers a 50% token discount with asynchronous processing.

Access option	Input / output per 1M tokens	Condition	Saving at APIMaster's lowest quote
APIMaster Opus 4.8	$0.6445829 / $3.2229145	Selected public route; verify supported features	—
Anthropic Standard	$5 / $25	Standard uncached token rates	About 87.1% lower token rates
Anthropic Batch	$2.50 / $12.50	Asynchronous batches	About 74.2% lower token rates

Official cache reads cost $0.50/M input, below APIMaster's lowest displayed **uncached** input rate. Five-minute cache writes cost $6.25/M and one-hour writes $10/M. Compare your real cache-hit mix rather than applying the headline discount to all input. Fast mode, data residency and tools have separate terms.

What do 100 or 1,000 Opus 4.8 tasks cost?

For 100,000 uncached input + 20,000 billed output tokens per task, the formula is 0.1 × input rate + 0.02 × output rate. These are calculated budgets, not recorded invoices or a quality benchmark.

Workload	Anthropic Standard	APIMaster from	Difference
One task	$1.00	$0.128917	About $0.871083
100 tasks	$100.00	$12.89	About $87.11
1,000 tasks	$1,000.00	$128.92	About $871.08

Include all model calls and retries in a coding agent. A task that triggers ten such calls costs about $1.29 at the lowest quoted rate, before cache/tool effects. The metric to track is total charged cost per accepted result, including unsuccessful attempts.

Cheap Opus 4.8 or newer Opus 5.5?

If your prompts and acceptance tests already target 4.8, the exact Opus 4.8 ID lets you evaluate a cheaper route without simultaneously changing model versions. That is useful for a stable integration; it is not evidence that 4.8 outperforms 5.5.

At the same illustrative token budget, the lowest Opus 5.5 offer costs $0.268157 per task, versus $0.128917 for 4.8. Real task costs can differ because tokenization, reasoning, retries and success rates differ. See the separate cheap Opus 5.5 buying guide when comparing versions.

How to get an Opus 4.8 API key

Open the live model card → register → fund your wallet → create a key. Use https://apimaster.ai/v1 and the exact APIMaster model ID claude-opus-4-8:

curl "https://apimaster.ai/v1/chat/completions" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-opus-4-8","messages":[{"role":"user","content":"Review this design for failure cases and propose a minimal implementation plan."}]}'

For Claude Code setup, choose a client-compatible route and follow its authentication instructions. The 14-route count above covers ordinary public API offers and excludes client-exclusive listings. An API wallet is separate from Claude Pro/Max subscriptions.

FAQ

How much cheaper is Opus 4.8 on APIMaster?

Up to about 87.1% below Anthropic's $5 / $25 Standard uncached rates, using the lowest November 9 public quote. It is a maximum across available routes, not a discount on every offer.

Is this actually Opus 4.8 rather than Opus 5.5?

The article and request use claude-opus-4-8. Inspect route-specific fingerprint records and run your own acceptance tests. A model label alone is not a quality or availability guarantee.

Does cheap Opus 4.8 include unlimited usage?

No. It is metered API access. Input, billed output, applicable cache/tool charges and retries determine spending.

Can I use the API in Claude Code?

Use a route explicitly compatible with that client and the linked setup guide. Ordinary API route counts do not establish client compatibility or include a Claude subscription.

Get the current Opus 4.8 discount: compare prices → register → create a key → https://apimaster.ai/v1 + claude-opus-4-8. Also compare cheap Sonnet 4.6 for a lower-priced alternative.

Same-model platform prices: APIMaster vs OpenRouter and Vercel.

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