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: 2026-11-14.
Claude Sonnet 5 vs Gemini 3.7 Flash: the short version
At the prices we quote, Gemini 3.7 Flash costs less than Claude Sonnet 5 on input and on output: $0.75 against $2.00 per 1M input tokens (63% less), and $3.75 against $10.00 per 1M output tokens (63% less). The price we quote for Gemini 3.7 Flash is a promotional rate: 50% off Google's standard $1.50 per 1M input tokens and $7.50 per 1M output tokens, and Google states the promotion ends on 31 Dec 2026. With the Support Ticket profile (1,500 input and 500 output tokens per request), 1,000 requests cost $8.00 on Claude Sonnet 5 and $3.00 on Gemini 3.7 Flash at list price, 63% less on Gemini 3.7 Flash. On Arena ELO, Gemini 3.7 Flash scores 1489 and Claude Sonnet 5 scores 1442, 47 points apart (scores as of 2026-11-09). The context window is 1M tokens on both. Both are recorded here as proprietary, with access through an API. Prices as quoted on 2026-11-14. Each price is the list price of one host, the one we quote for that model. A model sold by several hosts has other prices, listed on its model page.
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: 1442 (as of 2026-11-09)
- Full Claude Sonnet 5 pricing page
Gemini 3.7 Flash pricing (Google)
- Input: $0.75 per 1M tokens
- Output: $3.75 per 1M tokens
- Batch API (input/output): $0.375 / $1.875
- Prompt-cache read: $0.075
- Context window: 1M
- Arena ELO: 1489 (as of 2026-11-09)
- Full Gemini 3.7 Flash pricing page
Cost per 1,000 requests by business use case
List price vs after discounts (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 price | Claude Sonnet 5 after discounts | Gemini 3.7 Flash list price | Gemini 3.7 Flash after discounts |
|---|---|---|---|---|---|
| Support Ticket | 1,500 / 500 | $8.00 | $6.47 | $3.00 | $2.39 |
| Knowledge Q&A | 2,000 / 800 | $12.00 | $9.62 | $4.50 | $3.56 |
| Meeting Summary | 10,000 / 1,200 | $32.00 | $15.50 | $12.00 | $5.70 |
| Marketing Content | 2,500 / 1,800 | $23.00 | $22.15 | $8.63 | $8.29 |
| Coding Task | 3,000 / 2,000 | $26.00 | $23.45 | $9.75 | $8.74 |
| Invoice Processing | 1,500 / 600 | $9.00 | $4.27 | $3.38 | $1.55 |
| Call Summary | 2,000 / 700 | $11.00 | $5.40 | $4.13 | $2.00 |
| Agent Workflow | 6,000 / 3,000 | $42.00 | $34.86 | $15.75 | $12.92 |
Common questions about Claude Sonnet 5 vs Gemini 3.7 Flash
- Which is cheaper, Claude Sonnet 5 or Gemini 3.7 Flash?
- At the prices we quote, Gemini 3.7 Flash costs less than Claude Sonnet 5 on input and on output: $0.75 against $2.00 per 1M input tokens (63% less), and $3.75 against $10.00 per 1M output tokens (63% less). The price we quote for Gemini 3.7 Flash is a promotional rate: 50% off Google's standard $1.50 per 1M input tokens and $7.50 per 1M output tokens, and Google states the promotion ends on 31 Dec 2026. Prices as quoted on 2026-11-14. Each price is the list price of one host, the one we quote for that model. A model sold by several hosts has other prices, listed on its model page.
- What do 1,000 Support Ticket requests cost on Claude Sonnet 5 and on Gemini 3.7 Flash?
- With the Support Ticket profile (1,500 input and 500 output tokens per request), 1,000 requests cost $8.00 on Claude Sonnet 5 and $3.00 on Gemini 3.7 Flash at list price, 63% less on Gemini 3.7 Flash. Prices as quoted on 2026-11-14.
- How do Claude Sonnet 5 and Gemini 3.7 Flash compare on Arena score, context window and licence?
- On Arena ELO, Gemini 3.7 Flash scores 1489 and Claude Sonnet 5 scores 1442, 47 points apart (scores as of 2026-11-09). The context window is 1M tokens on both. Both are recorded here as proprietary, with access through an API.
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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.