Verified 2026 API Rates • Prompt Caching & Batch ROI

Google: Gemini 2.5 Flash vs Amazon: Nova Pro 1.0

Compare real-world API costs for Google: Gemini 2.5 Flash ($0.3/$2.5) vs Amazon: Nova Pro 1.0 ($0.8/$3.2). Calculate Prompt Caching ROI & Batch API savings.

Google: Gemini 2.5 Flash saves up to 63% on base input tokens
Google

Google: Gemini 2.5 Flash

gemini-2.5-flash
Base Input Rate
$0.30 / 1M
Output Rate
$2.50 / 1M
Prompt Cache Read
$0.030 / 1M (-90%)
Cache Write Surcharge
$0.00 (Free write)
Batch API Discount
-50% Off
Context Window
1,048.576k tokens
Quality Index (MMLU)
88
Amazon

Amazon: Nova Pro 1.0

nova-pro-v1
Base Input Rate
$0.80 / 1M
Output Rate
$3.20 / 1M
Prompt Cache Read
$0.40 / 1M (-50%)
Cache Write Surcharge
$0.00 (Free write)
Batch API Discount
-50% Off
Context Window
300k tokens
Quality Index (MMLU)
78
Differential Module 1

Prompt Caching ROI & Write Surcharge Break-Even Analysis

Prompt caching drastically reduces input token costs for static prefixes like system prompts, tool schemas, and document chunks. Compare caching mechanisms between Google: Gemini 2.5 Flash and Amazon: Nova Pro 1.0:

Google: Gemini 2.5 Flash Caching Profile-90% read discount

  • Cached Read Price: $0.030 per 1M tokens.
  • Write Surcharge: $0.00 (automatic caching with zero write penalty).
  • Minimum Cache Prefix: 1,024 tokens.
  • Amortization Rule: Immediate net savings from first cached read call.

Amazon: Nova Pro 1.0 Caching Profile-50% read discount

  • Cached Read Price: $0.400 per 1M tokens.
  • Write Surcharge: $0.00 (automatic caching with zero write penalty).
  • Minimum Cache Prefix: 1,024 tokens.
  • Amortization Rule: Immediate net savings from first cached read call.
Differential Module 2

Batch API 50% Discount Offload vs Real-Time SLA

Asynchronous Batch APIs cut total token expenditures in half (50% off input and output) in exchange for non-realtime execution (up to 24-hour turnaround SLA).

Model / ArchitectureStandard Input / OutputBatch 50% Off Input / OutputTurnaround SLAOptimal Use Cases
Google: Gemini 2.5 Flash$0.30 / $2.50$0.15 / $1.25 (-50%)24 Hours max (typically 30m - 2h)Bulk evaluation, dataset labeling, background summarization
Amazon: Nova Pro 1.0$0.80 / $3.20$0.40 / $1.60 (-50%)24 Hours max (typically 30m - 2h)Offline document translation, embedding backfills, test suites
Differential Module 3

Context Window Escalation & Tiered Pricing Architecture

Massive context windows allow ingesting entire repositories or books, but pricing models differ drastically between flat-rate vendors and tiered step-up pricing.

Google: Gemini 2.5 Flash Context Capacity

Provides a 1,048.576k token context window with a maximum output limit of 65.535k tokens.✓ Flat-rate billing across all prompt sizes up to max context ceiling.

Amazon: Nova Pro 1.0 Context Capacity

Provides a 300k token context window with a maximum output limit of 5.12k tokens.✓ Flat-rate billing across all prompt sizes up to max context ceiling.

Quill Strategic Content

Real-World Production Scenarios: Monthly Spend Projections

Pre-computed monthly engineering bill projections across 3 representative enterprise application workloads:

Scenario 1

RAG Knowledge Base & Enterprise Search

100,000 queries/month, 3,500 input tokens (system + 5 retrieved chunks), 400 output tokens, 75% prompt cache hit rate.

Google: Gemini 2.5 Flash:$134.13/mo
Amazon: Nova Pro 1.0:$303.00/mo
Delta Savings:-$168.88 (56%)
Architecture Verdict:Google: Gemini 2.5 Flash delivers 56% lower monthly spend ($168.88/mo savings) for this workload profile.
Scenario 2

Multi-Turn Coding Agent & ReAct Loops

25,000 tasks/month, 8,000 input tokens (accumulating conversation context & tool schemas), 1,200 output tokens, 85% cache hit rate.

Google: Gemini 2.5 Flash:$82.42/mo
Amazon: Nova Pro 1.0:$173.90/mo
Delta Savings:-$91.48 (53%)
Architecture Verdict:Google: Gemini 2.5 Flash delivers 53% lower monthly spend ($91.48/mo savings) for this workload profile.
Scenario 3

High-Throughput Offline Data Extraction

500,000 records/month, 1,500 input tokens, 250 output tokens, 100% batch offload (24-hour turnaround SLA).

Google: Gemini 2.5 Flash:$248.50/mo
Amazon: Nova Pro 1.0:$470.00/mo
Delta Savings:-$221.50 (47%)
Architecture Verdict:Google: Gemini 2.5 Flash delivers 47% lower monthly spend ($221.50/mo savings) for this workload profile.
毫秒級即時互動模擬引擎

Google: Gemini 2.5 Flash 對比 Amazon: Nova Pro 1.0

針對企業典型三大工程落地形態(RAG 知識庫、Coding Agent 多輪、離線批次清洗)進行精確成本演算:

Live 50ms Engine
月度請求量 (Requests)100,000
單次輸入代幣 (Input Tokens)4,000
單次輸出代幣 (Output Tokens)1,000
Prompt 快取命中率 (Cache Hit)70%
Batch API 批次分流比例0%
Google: Gemini 2.5 Flash 更便宜

預計每月節省

Google: Gemini 2.5 Flash$294.40$2.944// 千次請求
對比
Amazon: Nova Pro 1.0$528.00$5.280// 千次請求
Developer FAQs

Frequently Asked Questions: Google: Gemini 2.5 Flash vs Amazon: Nova Pro 1.0

Authoritative answers on API rate limits, pricing math, break-even thresholds, and architectural migration.

1Which model is cheaper overall: Google: Gemini 2.5 Flash or Amazon: Nova Pro 1.0?

At base pricing, Google: Gemini 2.5 Flash costs $0.3/1M input and $2.5/1M output, while Amazon: Nova Pro 1.0 costs $0.8/1M input and $3.2/1M output. The cheaper option depends on your input-to-output token ratio and whether prompt caching or batch discounts are utilized.

2How does Prompt Caching impact the cost of Google: Gemini 2.5 Flash vs Amazon: Nova Pro 1.0?

Google: Gemini 2.5 Flash offers a 90% read discount ($0.03/1M), whereas Amazon: Nova Pro 1.0 provides a 50% read discount ($0.4/1M). High cache hit ratios (>70%) significantly compress the cost delta in agentic and RAG architectures.

3Can I use Batch API with Google: Gemini 2.5 Flash or Amazon: Nova Pro 1.0 to save 50%?

Google: Gemini 2.5 Flash supports 50% batch offload discounts for asynchronous 24-hour turnaround tasks. Amazon: Nova Pro 1.0 supports 50% batch discounts.

4What are the context window limits and tiered pricing rules for Google: Gemini 2.5 Flash vs Amazon: Nova Pro 1.0?

Google: Gemini 2.5 Flash features a 1,048.576k context window with flat per-token pricing. In comparison, Amazon: Nova Pro 1.0 supports 300k tokens with flat per-token pricing.