Grok 4.1 Fast vs Seed 2.0 Mini
Seed 2.0 Mini comes out ahead, 80 to 71 on our weighted score, and it is the cheaper option too.
xAIGrok 4.1 Fast
71/100- ECI—
- Price$0.20 / $0.50
- Context2M
- Our pick
ByteDance SeedSeed 2.0 Mini
80/100- ECI—
- Price$0.03 / $0.297
- Context256K
Add a model
Make it a three-way comparison.
Seed 2.0 Mini is our pick
Seed 2.0 Mini is the better all-round choice, scoring 80/100 against Grok 4.1 Fast (71). It leads on price and inputs & features. Grok 4.1 Fast wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceSeed 2.0 MiniSeed 2.0 Mini $0.097 · Grok 4.1 Fast $0.275 per 1M tokens (3:1 blend)
- Longest contextGrok 4.1 FastGrok 4.1 Fast 2,000,000 · Seed 2.0 Mini 256,000 tokens
- Widest inputsSeed 2.0 MiniGrok 4.1 Fast: Text, Images · Seed 2.0 Mini: Text, Images, Video
- Self-hostingNo open weightsBoth are available only through APIs
| Measure | Weight | Grok 4.1 Fast | Seed 2.0 Mini |
|---|---|---|---|
| Price | 50% | 76 | 98 |
| Inputs & features | 30% | 60 | 80 |
| Context window | 20% | 72 | 36 |
| Overall | 100% | 71/100 | 80/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Grok 4.1 FastxAI | Seed 2.0 MiniByteDance Seed |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.20 | $0.03 (best) |
| Output | $0.50 | $0.297 (best) |
| Cached input | — | $0.0059 |
| Blended (3:1) | $0.275 | $0.097 (best) |
| Long-context rate | Same rate | Over 32K: $0.059 / $0.594 |
| Price source | Median of 2 providers | Official Volcengine Ark API |
| Limits | ||
| Context window | 2,000,000 tokens (best) | 256,000 tokens |
| Max output | 30,000 tokens | 32,000 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | Yes |
| PDFs | No | No |
| Audio | No | No |
| Video | No | Yes |
| Reasoning | No | Yesminimal · low · medium · high · xhigh · max |
| Tool calling | Yes | Yes |
| Structured output | Yes | Yes |
| Availability | ||
| Weights | Proprietary | Proprietary |
| API model ID | — | doubao-seed-2-0-mini-260428 |
| API providers | 2 | 8 (best) |
| Released | Nov 19, 2025 | Feb 14, 2026 |
| Knowledge cutoff | — | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Grok 4.1 Fast$3.00
- Seed 2.0 Mini$0.891
Which should you choose?
Which is better: Grok 4.1 Fast or Seed 2.0 Mini?
Seed 2.0 Mini is the better all-round choice, scoring 80/100 against Grok 4.1 Fast (71). It leads on price and inputs & features. Grok 4.1 Fast wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Grok 4.1 Fast or Seed 2.0 Mini?
Seed 2.0 Mini is cheaper at $0.03 input / $0.297 output per million tokens (official Volcengine Ark API price). Grok 4.1 Fast costs $0.20 input / $0.50 output per million tokens (median across 2 API providers). At a typical mix of three input tokens to one output token, that is $0.097 per million tokens for Seed 2.0 Mini versus $0.275 for Grok 4.1 Fast (2.8× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Grok 4.1 Fast has not been scored yet and Seed 2.0 Mini has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Grok 4.1 Fast and Seed 2.0 Mini yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Grok 4.1 Fast has the largest context window at 2,000,000 tokens, against 256,000 for Seed 2.0 Mini. Maximum output per response: Grok 4.1 Fast up to 30,000, Seed 2.0 Mini up to 32,000 tokens.
Which can read images, PDFs, audio or video?
Grok 4.1 Fast accepts text and images; Seed 2.0 Mini accepts text, images and video. Seed 2.0 Mini handles the widest range of inputs.
Are any of these open source?
No. Grok 4.1 Fast and Seed 2.0 Mini are proprietary and only available through APIs and apps.
Which is newer?
Seed 2.0 Mini is the newest, released Feb 14, 2026. Grok 4.1 Fast came out Nov 19, 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
