Claude Sonnet 4.6 vs Gemini 3.1 Flash-Lite
Claude Sonnet 4.6 and Gemini 3.1 Flash-Lite are both current production-tier models. Gemini 3.1 Flash-Lite is meaningfully cheaper at $0.25 / $1.5 per 1M. Claude Sonnet 4.6 leads on coding, reasoning, general knowledge.
Specs side by side
| Metric | Anthropic Claude Sonnet 4.6 | Google Gemini 3.1 Flash-Lite |
|---|---|---|
| Input price (per 1M) | $3 | $0.25 |
| Output price (per 1M) | $15 | $1.5 |
| Context window | 1M tokens | 1M tokens |
| Speed tier | balanced | ultra |
| Open weights | No | No |
| EU region | Yes | Yes |
| Free tier | No | Google AI Studio |
| Prompt caching | Yes | No |
| Vision input | Yes | Yes |
| Extended thinking | Yes | No |
When to choose each
Choose Claude Sonnet 4.6 if…
- HIPAA eligibility is required
- Coding is central to your workload
- Reasoning is central to your workload
Choose Gemini 3.1 Flash-Lite if…
- Cost is a priority ($0.25 / $1.5 per 1M vs $3 / $15 per 1M)
- Low latency matters (ultra vs balanced)
- You want a free tier for prototyping
Benchmark delta
Claude Sonnet 4.6 leads on
- Coding
- Reasoning
- General knowledge
- Long-context retrieval
- Instruction following
- Vision
- Tool use
Gemini 3.1 Flash-Lite leads on
Gemini 3.1 Flash-Lite has no meaningful benchmark lead in this pair.
FAQ — Claude Sonnet 4.6 vs Gemini 3.1 Flash-Lite
Claude Sonnet 4.6 vs Gemini 3.1 Flash-Lite — which is better?
Claude Sonnet 4.6 and Gemini 3.1 Flash-Lite are both current production-tier models. Gemini 3.1 Flash-Lite is meaningfully cheaper at $0.25 / $1.5 per 1M. Claude Sonnet 4.6 leads on coding, reasoning, general knowledge. The right pick depends on your use case — see "When to choose each" above for a data-driven decision.
How does Claude Sonnet 4.6 pricing compare to Gemini 3.1 Flash-Lite?
Claude Sonnet 4.6 costs $3 / $15 per 1M vs Gemini 3.1 Flash-Lite at $0.25 / $1.5 per 1M. Gemini 3.1 Flash-Lite is cheaper on output tokens by roughly 900%. Both support prompt caching, which reduces effective cost by 80-90% on repeat system prompts.
Does Claude Sonnet 4.6 or Gemini 3.1 Flash-Lite have the bigger context window?
Gemini 3.1 Flash-Lite has a 1M-token context window — 1× the 1M context of Claude Sonnet 4.6. Enough for entire codebases, books, or multi-document RAG.
Is there a free tier for Claude Sonnet 4.6 or Gemini 3.1 Flash-Lite?
Claude Sonnet 4.6: no — Free via Claude.ai web chat; API requires paid credits. Gemini 3.1 Flash-Lite: yes — Reduced daily quota; most generous free tier of any frontier lab.
Which is better for coding — Claude Sonnet 4.6 or Gemini 3.1 Flash-Lite?
Claude Sonnet 4.6 leads on coding benchmarks (Claude Sonnet 4.6: 94/100, Gemini 3.1 Flash-Lite: 72/100). For production coding agents also weigh tool-use performance — Claude Sonnet 4.6 scores 96, Gemini 3.1 Flash-Lite scores 76.