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In short
For most coding work the best pick right now is Claude Sonnet 5.5: it shines in agents like Claude Code and Cursor and costs far less than the flagships. Use Claude Opus or Fable for hard architecture, and DeepSeek or Gemini Flash for cheap bulk tasks. All of them run on one KLINCH key.
Quick comparison
| Model | Best at | KLINCH price per 1M tokens |
|---|---|---|
| Claude Sonnet 5.5 | everyday code and agents | $0.2 / $1 |
| Claude Opus 5.5 | hard architecture, long tasks | $0.4 / $2 |
| GPT-6.1 Sol | code and agents in Codex CLI | $0.2 / $1 |
| Gemini 3.6 Flash | long context, fast and cheap | $0.05 / $0.3 |
| DeepSeek V4 Pro | reasoning and code on a budget | $0.13 / $0.4 |
When to pick Claude
Claude is strongest when the model reads the project, edits several files and runs commands itself. Claude Code is built on it, and it is the most common choice in Cursor and Cline. Sonnet covers daily work, Opus and Fable handle big refactors.
When to pick GPT, Gemini or DeepSeek
- GPT: if you work in Codex CLI or already use the OpenAI SDK.
- Gemini Flash: when you need a whole codebase in context and a fast answer.
- DeepSeek: when price matters most: tests, drafts, automated code processing.
Try them all on your own tasks
- Buy a KLINCH key on FunPay.
- Connect it to Claude Code, Cursor or your SDK at
https://api.klinch.cloud. - Switch models with one line and compare the results.
Guides: Claude Code without a Max plan and Cursor with your own key.