Seed 1.8 vs Seed 2.0 Code
At a Glance
| Compare | Seed 1.8ByteDance Seed | Seed 2.0 CodeByteDance Seed |
|---|---|---|
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | Not reported | $0.50Openrouter ↗ · Sep 22, 2026 |
| Output priceFrom · USD / 1M tokens | Not reported | $3.00Openrouter ↗ · Sep 22, 2026 |
| Context windowMaximum documented tokens | Not reported | Not reported |
| Model facts checked | Sep 3, 2026View model evidence → | Sep 3, 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 1.8 | Seed 2.0 Code |
|---|---|---|
| Developer | ByteDance Seed | ByteDance Seed |
| Family | Seed 1 8 | Seed 2 0 |
| Model | Seed 1.8 | Seed 2.0 Code |
| Version | Seed 1.8 | Seed 2.0 Code |
| Lifecycle | active | active |
| Released | Unknown | 2026-02-14 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image | Text |
| Output modalities | Text | Text |
| Context window | Unknown | Unknown |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Unknown | Openrouter (Standard) |
| Capabilities | chat, generation, reasoning, tools | agents, chat, generation, reasoning, structured_outputs, tools |
Seed 1.8 Capabilities
Seed 2.0 Code Capabilities
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Primary Evidence
Sources and Freshness
Questions
Seed 1.8 vs Seed 2.0 Code FAQs
Is Seed 1.8 or Seed 2.0 Code better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Seed 1.8 and Seed 2.0 Code, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Seed 1.8 or Seed 2.0 Code?+
Only Seed 2.0 Code has a directly sourced input price: $0.50 per million tokens. Only Seed 2.0 Code has a directly sourced output price: $3.00 per million tokens.
Which has a larger context window, Seed 1.8 or Seed 2.0 Code?+
Neither model has a larger sourced context window in this comparison. Seed 1.8 is — and Seed 2.0 Code is —.
Which performs better in benchmarks, Seed 1.8 or Seed 2.0 Code?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Seed 1.8 or Seed 2.0 Code be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Seed 1.8 is not marked open weight; Seed 2.0 Code is not marked open weight.
Can Seed 1.8 and Seed 2.0 Code understand images?+
Seed 1.8 is documented with image input; Seed 2.0 Code is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Seed 1.8 or Seed 2.0 Code?+
Neither has a larger sourced maximum output. Seed 1.8 is — and Seed 2.0 Code is —.
Do Seed 1.8 and Seed 2.0 Code support reasoning and tool use?+
Seed 1.8: reasoning, tool calling, and image input. Seed 2.0 Code: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, Seed 1.8 or Seed 2.0 Code?+
Seed 1.8 has 0 sourced provider routes; Seed 2.0 Code has 1, so Seed 2.0 Code has broader tracked availability.
Which offers better value, Seed 1.8 or Seed 2.0 Code?+
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.