Seed 2.1 Evolving vs Llama 3.1 405B Instruct
At a Glance
| Compare | Seed 2.1 EvolvingByteDance Seed | |
|---|---|---|
| Pricing and Limits | ||
| Context windowMaximum documented tokens | Not reported | 131K |
| Model facts checked | Sep 3, 2026View model evidence → | Aug 28, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Seed 2.1 Evolving | Llama-3.1-405B-Instruct |
|---|---|---|
| Developer | ByteDance Seed | Meta |
| Family | Seed 2 1 | Llama 3 1 405b Instruct |
| Model | Seed 2.1 Evolving | Llama-3.1-405B-Instruct |
| Version | Seed 2.1 Evolving | Llama-3.1-405B-Instruct |
| Lifecycle | active | active |
| Released | 2026-06-23 | 2024-07-23 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image, Video | Text |
| Output modalities | Text | Text |
| Context window | Unknown | 131K |
| Total parameters | Unknown | 405.9B |
| Active parameters | Unknown | Unknown |
| License | Unknown | llama3.1 |
| Open weights | No | Yes |
| API available | Yes | Yes |
| Self-hostable | No | Yes |
| Provider access | Unknown | Together Ai (Standard) |
| Capabilities | agents, chat, generation, reasoning, structured_outputs, tools | chat, generation, tools |
Seed 2.1 Evolving Capabilities
Llama 3.1 405B Instruct Capabilities
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Primary Evidence
Sources and Freshness
Questions
Seed 2.1 Evolving vs Llama 3.1 405B Instruct FAQs
Is Seed 2.1 Evolving or Llama 3.1 405B Instruct better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Seed 2.1 Evolving and Llama 3.1 405B Instruct, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Seed 2.1 Evolving or Llama 3.1 405B Instruct?+
Neither model has a directly sourced input price in this comparison. Neither model has a directly sourced output price in this comparison.
Which has a larger context window, Seed 2.1 Evolving or Llama 3.1 405B Instruct?+
Neither model has a larger sourced context window in this comparison. Seed 2.1 Evolving is — and Llama 3.1 405B Instruct is 131K.
Which performs better in benchmarks, Seed 2.1 Evolving or Llama 3.1 405B Instruct?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Seed 2.1 Evolving or Llama 3.1 405B Instruct be self-hosted?+
Llama 3.1 405B Instruct is the only model in this pair currently marked as self-hostable. Seed 2.1 Evolving is not marked open weight; Llama 3.1 405B Instruct is open weight.
Can Seed 2.1 Evolving and Llama 3.1 405B Instruct understand images?+
Seed 2.1 Evolving is documented with image input; Llama 3.1 405B Instruct is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Seed 2.1 Evolving or Llama 3.1 405B Instruct?+
Neither has a larger sourced maximum output. Seed 2.1 Evolving is — and Llama 3.1 405B Instruct is —.
Do Seed 2.1 Evolving and Llama 3.1 405B Instruct support reasoning and tool use?+
Seed 2.1 Evolving: reasoning, tool calling, and image input. Llama 3.1 405B Instruct: tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, Seed 2.1 Evolving or Llama 3.1 405B Instruct?+
Seed 2.1 Evolving has 0 sourced provider routes; Llama 3.1 405B Instruct has 1, so Llama 3.1 405B Instruct has broader tracked availability.
Which offers better value, Seed 2.1 Evolving or Llama 3.1 405B Instruct?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.