Gemini 3.5 Flash alternatives
Looking for an alternative to Gemini 3.5 Flash? Here are the 6 closest llm provider / model options for AI coding, each ranked by how well it replaces Gemini 3.5 Flash — with the concrete reason to switch.
Quick comparison
| Model | Input price | SWE-bench | Context window | Speed |
|---|---|---|---|---|
| Gemini 3.5 Flash (you) | $1.50 | — | 1M+ | Fast |
| GPT-5.1 | $1.25 | 76% | 400K | Medium |
| Claude Sonnet 4.6 | $3 | 64% | 1M+ | Standard |
| Claude Haiku 4.5 | $1 | 40% | 200K | Fast |
| Gemini 3.6 Flash | $1.50 | — | 1M+ | Fast |
| Claude Opus 4.6 | $5 | — | 1M+ | Standard |
| Gemini 2.5 Pro | $1.25 | 63% | 1M+ | Standard |
The best Gemini 3.5 Flash alternatives
GPT-5.1
Default daily-driver coding agent with adaptive reasoning and warmer chat tone
Why consider it instead:
- Cheaper — $1.25/1M input vs $1.5, ~1.2× less
Day-to-day coding, fast agentic loops, balanced cost/quality
Why consider it instead:
- Built for: Day-to-day coding, fast agentic loops, balanced cost/quality
High-volume quick tasks, cost-sensitive agentic loops, inline completions
Why consider it instead:
- Cheaper — $1/1M input vs $1.5, ~1.5× less
High-throughput 1M-context work: long-context coding, computer use, agentic loops
Why consider it instead:
- Built for: High-throughput 1M-context work: long-context coding, computer use, agentic loops
Teams pinned to the 4.6 generation for reproducibility
Why consider it instead:
- Built for: Teams pinned to the 4.6 generation for reproducibility
Advanced reasoning, multimodal workflows, massive context tasks, agentic coding
Why consider it instead:
- Cheaper — $1.25/1M input vs $1.5, ~1.2× less
Switching from Gemini 3.5 Flash? Check the new tool fits the rest of your stack — Flowpicker shows compatibility warnings live.
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