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Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Last Verified 2026-10-01 ⚠ sources disagree — shown side by side context 65,536 JSON ↓ ⚠ 字段 output 在数据源之间存在分歧——我们不取平均、不抹平，原值并列展示在下方。
Pricing matrix USD per 1M tokens
| Field | Consensus | Evidence |
|---|
| Input | $0.5 | ✓ 3 independent sources 3 sources |
| Output | Unverified（未验证，不填 0） | disputed ×20.00 3 sources |
| Cache read | $0.05 | single source 1 source |
| Cache write (5m) | Unverified（未验证，不填 0） | not published |
| Cache write (1h) | Unverified（未验证，不填 0） | not published |
| Reasoning tokens | Unverified（未验证，不填 0） | not published |
证据链：各源原值并列（audit trail，点击展开）
| Field | Source | Raw value (USD/1M) | Independent | Observed |
|---|
| input | openrouter | 0.5000 | yes | 2026-10-01 08:00 |
| input | litellm | 0.5000 | yes | 2026-10-01 08:00 |
| input | litellm <span class="badge mute">mirror</span> | 0.5000 | no | 2026-10-01 08:00 |
| input | modelsdev | 0.5000 | yes | 2026-10-01 08:00 |
| output | openrouter | 3.0000 | yes | 2026-10-01 08:00 |
| output | litellm | 3.0000 | yes | 2026-10-01 08:00 |
| output | litellm <span class="badge mute">mirror</span> | 3.0000 | no | 2026-10-01 08:00 |
| output | modelsdev | 60.0000 | yes | 2026-10-01 08:00 |
| cache_read | litellm | 0.0500 | yes | 2026-10-01 08:00 |
Sources
This is an estimate based on public sticker prices, not your invoice. Machine-readable: /data/v1/pricing/google-gemini-3-1-flash-image-preview.json