Seed 2.0 Code vs GPT-5.1
Benchmark Performance
Available Benchmarks
Technical Differences
Side-by-Side Facts
| Field | Seed 2.0 Code | GPT-5.1 |
|---|---|---|
| Developer | ByteDance Seed | OpenAI |
| Family | Seed 2 0 | Gpt 5 1 |
| Model | Seed 2.0 Code | GPT-5.1 |
| Version | Seed 2.0 Code | GPT-5.1 |
| Lifecycle | active | active |
| Released | 2026-02-14 | 2025-11-13 |
| Knowledge cutoff | Unknown | 2024-09-30 |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
| Context window | Unknown | 400,000 |
| 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 | Openrouter (Standard) | Openai (Standard), Openrouter (Standard) |
| Capabilities | agents, chat, generation, reasoning, structured_outputs, tools | chat, generation, reasoning, structured_outputs, tools |
13 comparable fields · 8 material differences · Pair passes the primary-source comparison gate
Seed 2.0 Code Capabilities
GPT-5.1 Capabilities
Internal Comparison Graph
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
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GPT-5OpenAI | vs | GPT-5.1OpenAI | family variantsimage, text |
Seed 2.0 CodeByteDance Seed | vs |  Qwen3 Coder PlusQwen | cross-developer peerstext |
GPT-5.1OpenAI | vs | GPT-5.2 ProOpenAI | family variantsimage, text |
GPT-5.1OpenAI | vs | GPT-5.5OpenAI | family variantsimage, text |
GPT-5.1OpenAI | vs | Grok 4.5xAI | cross-developer peersimage, text |
GPT-5.1OpenAI | vs | Qwen3 VL PlusQwen | cross-developer peersimage, text |
Claude Sonnet 4.6Anthropic | vs | GPT-5.1OpenAI | cross-developer peersimage, text |
Seed 1.8ByteDance Seed | vs | GPT-5.1OpenAI | cross-developer peersimage, text |
GPT-5.1OpenAI | vs | cross-developer peersimage, text | |
Seed 2.0 CodeByteDance Seed | vs | Seed 2.0 MiniByteDance Seed | family variantstext |
Seed 2.0 CodeByteDance Seed | vs | Seed 2.0 LiteByteDance Seed | family variantstext |
Primary Evidence
Sources and Freshness
Questions
Seed 2.0 Code vs GPT-5.1 FAQs
Is Seed 2.0 Code or GPT-5.1 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Seed 2.0 Code and GPT-5.1, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Seed 2.0 Code or GPT-5.1?+
Seed 2.0 Code is $0.50 and GPT-5.1 is $1.25 per million tokens, so Seed 2.0 Code is cheaper on this metric. Seed 2.0 Code is $3.00 and GPT-5.1 is $10.00 per million tokens, so Seed 2.0 Code is cheaper on this metric.
Which has a larger context window, Seed 2.0 Code or GPT-5.1?+
Neither model has a larger sourced context window in this comparison. Seed 2.0 Code is — and GPT-5.1 is 400,000.
Which performs better in benchmarks, Seed 2.0 Code or GPT-5.1?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Seed 2.0 Code or GPT-5.1 be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Seed 2.0 Code is not marked open weight; GPT-5.1 is not marked open weight.
Can Seed 2.0 Code and GPT-5.1 understand images?+
Seed 2.0 Code is not documented with image input; GPT-5.1 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Seed 2.0 Code or GPT-5.1?+
Neither has a larger sourced maximum output. Seed 2.0 Code is — and GPT-5.1 is 128,000.
Do Seed 2.0 Code and GPT-5.1 support reasoning and tool use?+
Seed 2.0 Code: reasoning and tool calling. GPT-5.1: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Seed 2.0 Code or GPT-5.1?+
Seed 2.0 Code has 1 sourced provider route; GPT-5.1 has 2, so GPT-5.1 has broader tracked availability.
Which offers better value, Seed 2.0 Code or GPT-5.1?+
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.