Claude Sonnet 5 vs Gemini 3.7 Flash: API Pricing Comparison
Anthropic Claude Sonnet 5 vs Google Gemini 3.7 Flash — token prices, batch and cache rates, Arena ELO, and cost per request for 8 business use cases. Prices in USD per 1 million tokens. Data snapshot: 2026-08-14.
Claude Sonnet 5 pricing (Anthropic)
- Input: $2.00 per 1M tokens
- Output: $10.00 per 1M tokens
- Batch API (input/output): $1.00 / $5.00
- Prompt-cache read: $0.20
- Context window: 1M
- Arena ELO: 1455 (as of 2026-08-13)
- Full Claude Sonnet 5 pricing page
Gemini 3.7 Flash pricing (Google)
- Input: $0.38 per 1M tokens
- Output: $1.88 per 1M tokens
- Batch API (input/output): $0.19 / $0.94
- Prompt-cache read: $0.04
- Context window: 1M
- Arena ELO: 1458 (as of 2026-08-13)
- Full Gemini 3.7 Flash pricing page
Cost per request by business use case
List price vs optimized (prompt caching on the cached input share, batch API for async workloads — only where the provider publishes those rates).
| Use case | Tokens (in/out) | Claude Sonnet 5 list | Claude Sonnet 5 optimized | Gemini 3.7 Flash list | Gemini 3.7 Flash optimized |
|---|---|---|---|---|---|
| Support Ticket | 1,500 / 500 | $0.0080 | $0.0064 | $0.0015 | $0.0012 |
| Knowledge Q&A | 2,000 / 800 | $0.012 | $0.0095 | $0.0023 | $0.0018 |
| Meeting Summary | 10,000 / 1,200 | $0.032 | $0.015 | $0.0061 | $0.0029 |
| Marketing Content | 2,500 / 1,800 | $0.023 | $0.022 | $0.0043 | $0.0042 |
| Coding Task | 3,000 / 2,000 | $0.026 | $0.023 | $0.0049 | $0.0044 |
| Invoice Processing | 1,500 / 600 | $0.0090 | $0.0041 | $0.0017 | $0.000781 |
| Call Summary | 2,000 / 700 | $0.011 | $0.0053 | $0.0021 | $0.0010 |
| Agent Workflow | 6,000 / 3,000 | $0.042 | $0.034 | $0.0079 | $0.0065 |
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These are list prices — real cost also depends on caching, batching, negotiated discounts, marketplace agreements, and existing contracts. Get a FinOps review from OptimNow or compare all models.