ByteDance Seed Seed 2.1 Turbo vs Google Gemini 2.5 Flash
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Gemini 2.5 Flash is 1.2× cheaper at a typical mix of 3 input tokens per output token.
- Gemini 2.5 Flash accepts longer prompts: 1M vs 262K tokens.
- Seed 2.1 Turbo is the newer model (released 2026-08-12).
| Seed 2.1 Turbo | Gemini 2.5 Flash | |
|---|---|---|
| Vendor | ByteDance Seed | |
| Released | 2026-08-12 | 2025-06-17 |
| Input / 1M | $0.50 | $0.30 |
| Output / 1M | $2.50 | $2.50 |
| Cached input / 1M | — | $0.03 |
| Blended / 1M (3:1) | $1.00 | $0.85 |
| Context | 262K | 1M |
| Max output | 236K | 66K |
| Accepts | text, image, video | text, image, file, audio, video |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 1 | 3 |
| Cheapest provider, output | $2.50 | $2.50 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | — | Operational |
Cost calculator
Seed 2.1 Turbo
$67.50 per month$2.25 per day
Gemini 2.5 Flash
$55.50 per month$1.85 per day
Gemini 2.5 Flash saves $12.00 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare Seed 2.1 Turbo with
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