Comparison
Claude Opus 4.8 vs Gemini 3.5 Flash
Gemini 3.5 Flash costs 70% less per input token than Claude Opus 4.8. On generated (output) tokens, Claude Opus 4.8 costs 64% more than Gemini 3.5 Flash. Gemini 3.5 Flash accepts more context per request than Claude Opus 4.8.
| Field | Claude Opus 4.8 | Gemini 3.5 Flash |
|---|---|---|
| Provider | Anthropic | |
| Context window | 1M | 1M |
| Max output | 128K | 65.5K |
| Input / 1M | $5.00 | $1.5070% cheaper |
| Output / 1M | $25.00 | $9.0064% cheaper |
| Cached input / 1M | $0.50 | $0.1570% cheaper |
| Batch discount | 50% | 50% |
| Release date | — | — |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | Claude Opus 4.8 | Gemini 3.5 Flash |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $900.00 | $300.00cheaper |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $1,425 | $459.00cheaper |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $687.50 | $217.50cheaper |
Claude Opus 4.8 vs Gemini 3.5 Flash FAQ
- Is Claude Opus 4.8 cheaper than Gemini 3.5 Flash?
- Claude Opus 4.8 costs $5.00 per 1M input tokens versus $1.50 for Gemini 3.5 Flash — Gemini 3.5 Flash is 233% cheaper per input token.
- Which is cheaper for output tokens, Claude Opus 4.8 or Gemini 3.5 Flash?
- Claude Opus 4.8 charges $25.00 per 1M output tokens; Gemini 3.5 Flash charges $9.00 per 1M output tokens.
- Which has the larger context window, Claude Opus 4.8 or Gemini 3.5 Flash?
- Gemini 3.5 Flash does, with a 1,048,576-token context window.
- Do Claude Opus 4.8 and Gemini 3.5 Flash offer cache pricing?
- Claude Opus 4.8 discounts cached input to $0.50 per 1M tokens. Gemini 3.5 Flash discounts cached input to $0.15 per 1M tokens.
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