Claude Opus 4.5 vs Seed 2.0 Code
Benchmark Performance
Available Benchmarks
Technical Differences
Side-by-Side Facts
| Field | Claude Opus 4.5 | Seed 2.0 Code |
|---|---|---|
| Developer | Anthropic | ByteDance Seed |
| Family | Claude 4 | Seed 2 0 |
| Model | Claude Opus 4.5 | Seed 2.0 Code |
| Version | Claude Opus 4.5 | Seed 2.0 Code |
| Lifecycle | active | active |
| Released | 2025-11-24 | 2026-02-14 |
| Knowledge cutoff | 2025-05-01 | Unknown |
| Input modalities | Unknown | Text |
| Output modalities | Unknown | Text |
| Context window | 200,000 | 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 | Anthropic (Standard) | Openrouter (Standard) |
| Capabilities | chat, generation, reasoning, structured_outputs, tools | agents, chat, generation, reasoning, structured_outputs, tools |
11 comparable fields · 7 material differences · Interactive comparison only; indexing gate not met
Claude Opus 4.5 Capabilities
Seed 2.0 Code Capabilities
Internal Comparison Graph
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
Claude Opus 4.5Anthropic | vs | Claude Opus 4.6Anthropic | family variantsimage, text |
Seed 2.0 CodeByteDance Seed | vs |  Qwen3 Coder PlusQwen | cross-developer peerstext |
Claude Opus 4.5Anthropic | vs | Claude Opus 4.7Anthropic | family variantsimage, text |
Claude Opus 4.5Anthropic | vs | Claude Sonnet 4.5Anthropic | family variantsimage, text |
Claude Opus 4.5Anthropic | vs |  o3OpenAI | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | o3-proOpenAI | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs |  Gemma 4 12BGoogle DeepMind | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | GPT-5OpenAI | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | GPT-5.4 MiniOpenAI | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | GPT-5.4 NanoOpenAI | cross-developer peersimage, text |
Claude Haiku 4.5Anthropic | vs | Claude Opus 4.5Anthropic | family variantsimage, text |
Claude Opus 4.5Anthropic | vs | Seed 1.8ByteDance Seed | cross-developer peersimage, text |
Primary Evidence
Sources and Freshness
Questions
Claude Opus 4.5 vs Seed 2.0 Code FAQs
Is Claude Opus 4.5 or Seed 2.0 Code better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Opus 4.5 and Seed 2.0 Code, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Opus 4.5 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, Claude Opus 4.5 or Seed 2.0 Code?+
Neither model has a larger sourced context window in this comparison. Claude Opus 4.5 is 200,000 and Seed 2.0 Code is —.
Which performs better in benchmarks, Claude Opus 4.5 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 Claude Opus 4.5 or Seed 2.0 Code be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Claude Opus 4.5 is not marked open weight; Seed 2.0 Code is not marked open weight.
Can Claude Opus 4.5 and Seed 2.0 Code understand images?+
Claude Opus 4.5 is not 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, Claude Opus 4.5 or Seed 2.0 Code?+
Neither has a larger sourced maximum output. Claude Opus 4.5 is 64,000 and Seed 2.0 Code is —.
Do Claude Opus 4.5 and Seed 2.0 Code support reasoning and tool use?+
Claude Opus 4.5: reasoning and tool calling. Seed 2.0 Code: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Opus 4.5 or Seed 2.0 Code?+
Claude Opus 4.5 has 1 sourced provider route; Seed 2.0 Code has 1, a tie.
Which offers better value, Claude Opus 4.5 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.