Seed-2.0-Code vs Claude Haiku 5.5
Claude Haiku 5.5 costs 6.0x less per output token than Seed-2.0-Code ($0.50 vs $3.00 per million). Updated October 22, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- No data
- Output $/M
- $3.00
- Coding
- 70.7
- Overall
- 67.6
- Output $/M
- $0.50
Seed-2.0-Code or Claude Haiku 5.5: which to pick
Only Claude Haiku 5.5 has a coding score, 70.7 on the Vibe Coding Index; Seed-2.0-Code has none, so the two cannot be ranked on coding.
Compare them on price, context and the boards below.
No benchmark has tested both yet. Seed-2.0-Code has none yet; Claude Haiku 5.5 on LiveBench coding, LMArena WebDev and Terminal-Bench 4 (Vals AI). Compare them on price and context instead.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Only Claude Haiku 5.5 has a coding score, so no call is made.
One side not measured
Intelligence
AA Intelligence Index
No call
Only Claude Haiku 5.5 has a AA Intelligence Index result, 43.4.
Directional only
Web design
Design Arena: websites
No call
Only Claude Haiku 5.5 has a Design Arena: websites result, 1262.
Directional only
General
Vals Index
No call
Only Claude Haiku 5.5 has a Vals Index result, 58.7%.
Directional only
Long documents
Listed context window
Claude Haiku 5.5
Claude Haiku 5.5 takes 1M tokens against 262K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Claude Haiku 5.5
Seed-2.0-Code $0.0020, Claude Haiku 5.5 $0.0003 per turn.
List prices
At a glance
- Coding index
- Seed-2.0-Code not benchmarked, Claude Haiku 5.5 70.7 from 5 benchmarks.
- Widest category
- None yet: no category has been tested on both models.
- Widest single gap
- None yet: no benchmark has tested both models.
- Output price
- Seed-2.0-Code $3.00 against Claude Haiku 5.5 $0.50 per million output tokens, 6.0x apart.
- Context window
- Seed-2.0-Code takes 262K tokens, Claude Haiku 5.5 1M.
Benchmark by benchmark
Every board either model has a result on, a category to a fold; bars are each result on a 0 to 100 scale. Only one model is measured on each, so no row names a leader.
CodingDirectional onlySix of these boards feed the Vibe Coding Index16 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 5.5 | Leader |
|---|---|---|---|
| LiveBench coding | Not measured | 91.4% | Only Claude Haiku 5.5 measured |
| LMArena WebDev | Not measured | 1586 | Only Claude Haiku 5.5 measured |
| Terminal-Bench 4 (Vals AI) | Not measured | 36.4% | Only Claude Haiku 5.5 measured |
| Vibe Code Bench (Vals AI) | Not measured | 90.4% | Only Claude Haiku 5.5 measured |
| Code migration (Vals AI) | Not measured | 44.6% | Only Claude Haiku 5.5 measured |
| ProgramBench (Vals AI) | Not measured | 2.5% | Only Claude Haiku 5.5 measured |
| IOI (Vals AI) | Not measured | 47.3% | Only Claude Haiku 5.5 measured |
| SWE-bench Multimodal (Vals AI) | Not measured | 44.0% | Only Claude Haiku 5.5 measured |
| Vibe Code Bench 1-100 (Vals AI) | Not measured | 20.4% | Only Claude Haiku 5.5 measured |
| CyberBench (Vals AI) | Not measured | 75.5% | Only Claude Haiku 5.5 measured |
| SciCode | Not measured | 55.0% | Only Claude Haiku 5.5 measured |
| FrontierCode | Not measured | 46.4% | Only Claude Haiku 5.5 measured |
| FrontierSWE | Not measured | 43.8% | Only Claude Haiku 5.5 measured |
| LMArena WebDev: React | Not measured | 1605 | Only Claude Haiku 5.5 measured |
| LMArena WebDev: HTML | Not measured | 1569 | Only Claude Haiku 5.5 measured |
| SciCode | Not measured | 9.2% | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 23 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 5.5 | Leader |
|---|---|---|---|
| AA Intelligence Index | Not measured | 43.4 | Only Claude Haiku 5.5 measured |
| Epoch Capabilities Index | Not measured | 159.3 | Only Claude Haiku 5.5 measured |
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index14 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 5.5 | Leader |
|---|---|---|---|
| LiveBench research | Not measured | 81.9% | Only Claude Haiku 5.5 measured |
| LiveBench browser | Not measured | 80.0% | Only Claude Haiku 5.5 measured |
| LiveBench long agentic | Not measured | 57.6% | Only Claude Haiku 5.5 measured |
| SREBench (Vals AI) | Not measured | 5.7% | Only Claude Haiku 5.5 measured |
| Finance Agent (Vals AI) | Not measured | 54.1% | Only Claude Haiku 5.5 measured |
| Tax Agent Bench (Vals AI) | Not measured | 31.9% | Only Claude Haiku 5.5 measured |
| Legal Research Bench (Vals AI) | Not measured | 43.3% | Only Claude Haiku 5.5 measured |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 4.2% | Only Claude Haiku 5.5 measured |
| Excel Modeling Benchmark (Vals AI) | Not measured | 59.0% | Only Claude Haiku 5.5 measured |
| BioMysteryBench (Vals AI) | Not measured | 70.4% | Only Claude Haiku 5.5 measured |
| Terminal-Bench-Science (Vals AI) | Not measured | 10.0% | Only Claude Haiku 5.5 measured |
| Vals Science Index | Not measured | 38.5% | Only Claude Haiku 5.5 measured |
| APEX-Agents | Not measured | 56.1% | Only Claude Haiku 5.5 measured |
| Vending-Bench 2 | Not measured | $3,602 | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 27 boards here | |||
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index9 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 5.5 | Leader |
|---|---|---|---|
| LiveBench reasoning | Not measured | 82.4% | Only Claude Haiku 5.5 measured |
| MysteryMechanism (Vals AI) | Not measured | 35.1% | Only Claude Haiku 5.5 measured |
| Humanity's Last Exam (Artificial Analysis run) | Not measured | 44.4% | Only Claude Haiku 5.5 measured |
| GPQA Diamond (Epoch AI run) | Not measured | 89.6% | Only Claude Haiku 5.5 measured |
| ARC-AGI | Not measured | 89.0% | Only Claude Haiku 5.5 measured |
| ARC-AGI-2 | Not measured | 61.3% | Only Claude Haiku 5.5 measured |
| Chess puzzles | Not measured | 55.0% | Only Claude Haiku 5.5 measured |
| Mystery game puzzles | Not measured | 30.0% | Only Claude Haiku 5.5 measured |
| EBR-bench | Not measured | 43.8% | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 13 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index4 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 5.5 | Leader |
|---|---|---|---|
| OTIS Mock AIME | Not measured | 98.9% | Only Claude Haiku 5.5 measured |
| FrontierMath, tiers 1 to 3 | Not measured | 75.1% | Only Claude Haiku 5.5 measured |
| FrontierMath, tier 4 | Not measured | 46.3% | Only Claude Haiku 5.5 measured |
| ProofBench | Not measured | 89.0% | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 9 boards here | |||
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 5.5 | Leader |
|---|---|---|---|
| MedCode (Vals AI) | Not measured | 51.5% | Only Claude Haiku 5.5 measured |
| SimpleQA Verified | Not measured | 23.8% | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 16 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index7 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 5.5 | Leader |
|---|---|---|---|
| Design Arena: websites | Not measured | 1262 | Only Claude Haiku 5.5 measured |
| Design Arena: UI components | Not measured | 1291 | Only Claude Haiku 5.5 measured |
| Design Arena: game dev | Not measured | 1313 | Only Claude Haiku 5.5 measured |
| Design Arena: data viz | Not measured | 1294 | Only Claude Haiku 5.5 measured |
| Design Arena: 3D | Not measured | 1342 | Only Claude Haiku 5.5 measured |
| Design Arena: all code categories | Not measured | 1278 | Only Claude Haiku 5.5 measured |
| LiveBench design | Not measured | 83.1% | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 2 boards here | |||
GeneralDirectional onlyPublic boards, shown as published, kept out of the index9 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 5.5 | Leader |
|---|---|---|---|
| Vals Index | Not measured | 58.7% | Only Claude Haiku 5.5 measured |
| LiveBench data analysis | Not measured | 53.1% | Only Claude Haiku 5.5 measured |
| Public Benefits Bench (Vals AI) | Not measured | 63.2% | Only Claude Haiku 5.5 measured |
| SAGE (Vals AI) | Not measured | 45.8% | Only Claude Haiku 5.5 measured |
| MedScribe (Vals AI) | Not measured | 89.5% | Only Claude Haiku 5.5 measured |
| Long context reasoning (AA-LCR) | Not measured | 82.7% | Only Claude Haiku 5.5 measured |
| DTBench | Not measured | 95.0% | Only Claude Haiku 5.5 measured |
| LMCA | Not measured | 51.1% | Only Claude Haiku 5.5 measured |
| Furniture assembly | Not measured | 47.5% | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 37 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Claude Haiku 5.5 costs less
Repository review
50K input + 3K output tokens
Claude Haiku 5.5 costs less
Agent loop
200K input + 10K output tokens
Claude Haiku 5.5 costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | ByteDance Seed Seed-2.0-Code | Anthropic Claude Haiku 5.5 |
|---|---|---|
| Maker | ByteDance Seed | Anthropic |
| Weights | No public weights listed | No public weights listed |
| Released | August 12, 2026 | October 7, 2026 |
| Context window | 262K | 1M |
| Input $/Mtok | $0.50 | $0.10 |
| Output $/Mtok | $3.00 | $0.50 |
| Coding index | Not benchmarked | 70.7 |
| Independent measurements behind it | 0 | 5 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Seed-2.0-Code better than Claude Haiku 5.5 for coding?
Only Claude Haiku 5.5 has a coding score, 70.7 on the Vibe Coding Index; Seed-2.0-Code has none, so the two cannot be ranked on coding. Compare them on price, context and the boards below.
Which is cheaper, Seed-2.0-Code or Claude Haiku 5.5?
Seed-2.0-Code costs $0.50 per million input tokens and $3.00 per million output tokens; Claude Haiku 5.5 costs $0.10 and $0.50. Cost per solved task is known for neither of them.
Which has the bigger context window, Seed-2.0-Code or Claude Haiku 5.5?
Claude Haiku 5.5, with 1M tokens against 262K.
Has any benchmark tested both Seed-2.0-Code and Claude Haiku 5.5?
No benchmark has tested both yet. Seed-2.0-Code has none yet; Claude Haiku 5.5 on LiveBench coding, LMArena WebDev and Terminal-Bench 4 (Vals AI). Compare them on price and context instead. Data as of October 22, 2026.