Model comparison
Claude Sonnet 5 vs Gemini 3.7 Flash
Compare Claude Sonnet 5 vs Gemini 3.7 Flash API pricing: input/output token costs, cache pricing, context windows, workload estimates, and routing fit.
Claude Sonnet 5
anthropic · claude-sonnet-5
- Input
- $2
- Output
- $10
- Context
- 1M
Gemini 3.7 Flash
gemini · gemini-3.7-flash
- Input
- $0.75
- Output
- $3.75
- Context
- 1M
Quick take
Gemini 3.7 Flash has the lower input price at $0.75 per 1M input tokens. Gemini 3.7 Flash is cheaper for the example blended workload below. Gemini 3.7 Flash has the larger context window at 1M tokens.
Choose Claude Sonnet 5 if...
- Claude Sonnet 5 gives more room for long generated answers, reports, or code output.
Choose Gemini 3.7 Flash if...
- Gemini 3.7 Flash is the better default for cost-sensitive traffic and repeated high-volume calls.
- Gemini 3.7 Flash is safer for long documents, repository analysis, and RAG prompts because it has the larger context window.
Example workload cost
Estimates use input tokens plus 20% output tokens. They exclude provider discounts, cache hits, and tool/search surcharges.
| Workload | Claude Sonnet 5 | Gemini 3.7 Flash | Cheaper |
|---|---|---|---|
| 1M input + 200K output | $4.00 | $1.50 | Gemini 3.7 Flash |
| 10M input + 2M output | $40.00 | $15.00 | Gemini 3.7 Flash |
| 100M input + 20M output | $400.00 | $150.00 | Gemini 3.7 Flash |
Context, output, and capability fit
Gemini 3.7 Flash provides the larger context window. Check max output separately when the task needs long reports, code generation, or full-document rewrites.
- Claude Sonnet 5 max output
- 128K
- Gemini 3.7 Flash max output
- 65.5K
- Claude Sonnet 5 features
- prompt caching, function calling, vision
- Gemini 3.7 Flash features
- prompt caching, function calling, vision
Risk notes for Claude Sonnet 5
- No major capability risk is flagged in this snapshot, but provider pages should still be verified before production routing.
Risk notes for Gemini 3.7 Flash
- No major capability risk is flagged in this snapshot, but provider pages should still be verified before production routing.
Routing tags
frontierreasoningcodingagentsenterprise-raglong-contextmultimodalcache-friendlyragfaststablebudget