Seed 1.8 vs Seed 2.0 Mini
Seed 1.8 leads the LLM Stats Score 34.2 to 27.9. Seed 2.0 Mini is 3.9x cheaper per token.
ByteDance · ByteDance · Updated for 2026
Which is better?
Seed 1.8 leads the overall LLM Stats Score 34.2 to 27.9, ranking #91 overall.
In the 42 individual benchmarks reported for both models, Seed 1.8 wins 37; this is a narrower head-to-head signal than the composite indexes.
On price, Seed 2.0 Mini is roughly 3.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Seed 1.8
- overall performance matters — it scores 34.2 and ranks #91 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 37 of 42 exact shared results
Choose Seed 2.0 Mini
- cost matters — it's about 3.9x cheaper per token
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
1 more shared indexes
Individual benchmarks
57 reported for Seed 1.8 · 83 for Seed 2.0 Mini
Seed 1.8 outperforms in 37 benchmarks (AetherCode, AIME 2025, ARC-AGI, Beyond AIME, BLINK, CharXiv-R, CountBench, DUDE, DynaMath, EMMA, ERQA, LiveCodeBench v6, LiveSports-3K, LongVideoBench, LVBench, MathVision, Minerva, MMLU-Pro, MMMU, MMMU-Pro, MMStar, MMVU, MotionBench, MuirBench, Multi-Challenge, OVBench, OVOBench, RefSpatialBench, SuperGPQA, TempCompass, TOMATO, TVBench, VideoMME w sub., VideoMMMU, VideoSimpleQA, VLMsAreBiased, ZEROBench), while Seed 2.0 Mini is better at 5 benchmarks (Hallusion Bench, OmniDocBench 1.5, PHYBench, SimpleVQA, VLMsAreBlind).
Seed 1.8 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Seed 1.8 ($0.25/1M tokens) is 2.5x more expensive than Seed 2.0 Mini ($0.10/1M tokens).
For output processing, Seed 1.8 ($2.00/1M tokens) is 5.0x more expensive than Seed 2.0 Mini ($0.40/1M tokens).
In conclusion, Seed 1.8 is more expensive than Seed 2.0 Mini.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 256,000 tokens. Both models can generate responses up to 256,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Seed 1.8 and Seed 2.0 Mini support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Seed 1.8
Seed 2.0 Mini
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Both models were released on 2026-02-17.
They likely represent similar generations of model development.
Feb 17, 2026
6 months ago
Feb 17, 2026
6 months ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Seed 1.8 is available from DeepInfra. Seed 2.0 Mini is available from DeepInfra.
Seed 1.8
Seed 2.0 Mini
Outputs Comparison
Judge for yourself.
Run your own prompts against Seed 1.8 and Seed 2.0 Mini side-by-side, then vote on the output you prefer.
FAQ
Common questions about Seed 1.8 vs Seed 2.0 Mini.