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Gemini 3 Flash vs Claude Opus 4.6
A detailed comparison of Gemini 3 Flash (Google) and Claude Opus 4.6 (Anthropic) across pricing, performance, and features.
Pricing Comparison
| Metric | Gemini 3 Flash | Claude Opus 4.6 | Difference |
|---|---|---|---|
| Input / 1M tokens | $0.50 | $5.00 | +900% |
| Output / 1M tokens | $3.00 | $25.00 | +733% |
| Context window | 1M | 200K | — |
| Max output | 65.536K | 32K | — |
Benchmark Comparison
| Benchmark | Gemini 3 Flash | Claude Opus 4.6 |
|---|---|---|
| MMLU-Pro | 78% | 89.5% |
| HumanEval | 90% | 95% |
| GPQA | — | 75.5% |
Capabilities
| Capability | Gemini 3 Flash | Claude Opus 4.6 |
|---|---|---|
| code | ✓ | ✓ |
| reasoning | ✓ | ✓ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
Gemini 3 Flash Strengths
- ✓1M context at budget pricing
- ✓Very fast
- ✓Free tier available via Google AI Studio
Gemini 3 Flash Weaknesses
- ✗Less capable than Pro on complex reasoning
- ✗Audio input priced separately ($1/1M)
Claude Opus 4.6 Strengths
- ✓Best-in-class agentic tool use and coding
- ✓1M context available in beta (Tier 4)
- ✓Strong at following complex multi-step instructions
Claude Opus 4.6 Weaknesses
- ✗Premium pricing ($10/$37.50 at 1M context)
- ✗1M context beta is Tier 4 only
Quick Verdict
Best value: Gemini 3 Flash is the more affordable option at $0.5/$3 per 1M tokens.
Higher benchmarks: Claude Opus 4.6 scores higher on average across available benchmarks (86.7% avg).
Larger context: Gemini 3 Flash supports 1M tokens.
Choose Gemini 3 Flash if cost matters most. Choose Claude Opus 4.6 if you need the best possible quality for complex tasks.