Ornith 1.0 31B vs Qwen3.8 Max Preview vs Seed 2.1 Pro
Qwen3.8 Max Preview comes out ahead, 66 to 62 and 51 on our weighted score, though Seed 2.1 Pro is 41% cheaper per token.
DeepReinforce
Ornith 1.0 31B
51/100- ECI—
- Price—
- Context262K
- Our pick
Alibaba (Qwen)Qwen3.8 Max Preview
66/100- ECI—
- Price$2.00 / $6.00
- Context1M
ByteDance SeedSeed 2.1 Pro
62/100- ECI—
- Price$0.891 / $4.45
- Context256K
Qwen3.8 Max Preview is our pick
Qwen3.8 Max Preview is the better all-round choice, scoring 66/100 against Seed 2.1 Pro (62) and Ornith 1.0 31B (51). It leads on context window. Seed 2.1 Pro wins on inputs & features. The score weighs inputs & features 60%, context window 40%. 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 2.1 ProSeed 2.1 Pro $1.78 · Qwen3.8 Max Preview $3.00 per 1M tokens (3:1 blend) · Ornith 1.0 31B unpriced
- Longest contextQwen3.8 Max PreviewQwen3.8 Max Preview 1,000,000 · Ornith 1.0 31B 262,144 · Seed 2.1 Pro 256,000 tokens
- Widest inputsQwen3.8 Max Preview and Seed 2.1 ProOrnith 1.0 31B: Text, Images · Qwen3.8 Max Preview: Text, Images, Video · Seed 2.1 Pro: Text, Images, Video
- Self-hostingOrnith 1.0 31BPublishes downloadable weights (MIT)
| Measure | Weight | Ornith 1.0 31B | Qwen3.8 Max Preview | Seed 2.1 Pro |
|---|---|---|---|---|
| Inputs & features | 60% | 60 | 70 | 80 |
| Context window | 40% | 37 | 60 | 36 |
| Overall | 100% | 51/100 | 66/100 | 62/100 |
Left out because at least one model lacks the data: capability and price. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Ornith 1.0 31BDeepReinforce | Qwen3.8 Max PreviewAlibaba (Qwen) | Seed 2.1 ProByteDance Seed |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | — | $2.00 | $0.891 (best) |
| Output | — | $6.00 | $4.45 (best) |
| Cached input | — | — | $0.178 |
| Blended (3:1) | — | $3.00 | $1.78 (best) |
| Long-context rate | — | Same rate | Same rate |
| Price source | — | Median of 6 providers | Official Volcengine Ark API |
| Limits | |||
| Context window | 262,144 tokens | 1,000,000 tokens (best) | 256,000 tokens |
| Max output | — | 131,072 tokens | 256,000 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | Yes |
| PDFs | No | No | No |
| Audio | No | No | No |
| Video | No | Yes | Yes |
| Reasoning | Yes | Yes | Yesminimal · low · medium · high · xhigh · max |
| Tool calling | Yes | Yes | Yes |
| Structured output | No | No | Yes |
| Availability | |||
| Weights | OpenMIT | Proprietary | Proprietary |
| API model ID | — | — | doubao-seed-2-1-pro-260628 |
| API providers | — | 6 (best) | 2 |
| Released | Jun 25, 2026 | Jul 19, 2026 | Jun 23, 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.
- Ornith 1.0 31B—
- Qwen3.8 Max Preview$32.00
- Seed 2.1 Pro$17.81
Which should you choose?
Which is better: Ornith 1.0 31B, Qwen3.8 Max Preview or Seed 2.1 Pro?
Qwen3.8 Max Preview is the better all-round choice, scoring 66/100 against Seed 2.1 Pro (62) and Ornith 1.0 31B (51). It leads on context window. Seed 2.1 Pro wins on inputs & features. The score weighs inputs & features 60%, context window 40%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Ornith 1.0 31B, Qwen3.8 Max Preview or Seed 2.1 Pro?
Seed 2.1 Pro is cheaper at $0.891 input / $4.45 output per million tokens (official Volcengine Ark API price). Qwen3.8 Max Preview costs $2.00 input / $6.00 output per million tokens (median across 6 API providers). At a typical mix of three input tokens to one output token, that is $1.78 per million tokens for Seed 2.1 Pro versus $3.00 for Qwen3.8 Max Preview (1.7× as much). Ornith 1.0 31B has no published per-token price.
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Ornith 1.0 31B has not been scored yet, Qwen3.8 Max Preview has not been scored yet and Seed 2.1 Pro has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Ornith 1.0 31B, Qwen3.8 Max Preview and Seed 2.1 Pro yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.
Which has the bigger context window?
Qwen3.8 Max Preview has the largest context window at 1,000,000 tokens, against 262,144 for Ornith 1.0 31B and 256,000 for Seed 2.1 Pro. Maximum output per response: Qwen3.8 Max Preview up to 131,072, Seed 2.1 Pro up to 256,000 tokens.
Which can read images, PDFs, audio or video?
Ornith 1.0 31B accepts text and images; Qwen3.8 Max Preview accepts text, images and video; Seed 2.1 Pro accepts text, images and video. Qwen3.8 Max Preview handles the widest range of inputs.
Are any of these open source?
Ornith 1.0 31B publishes its weights (MIT) and can be self-hosted; Qwen3.8 Max Preview and Seed 2.1 Pro is proprietary.
Which is newer?
Qwen3.8 Max Preview is the newest, released Jul 19, 2026. Ornith 1.0 31B came out Jun 25, 2026; Seed 2.1 Pro came out Jun 23, 2026.
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.
