Seed-2.0-Code vs Claude Haiku 4.5
Seed-2.0-Code costs 1.7x less per output token than Claude Haiku 4.5 ($3.00 vs $5.00 per million). Updated October 22, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- No data
- Output $/M
- $3.00
- Coding
- 35.6
- Overall
- 41.0
- Output $/M
- $5.00
Seed-2.0-Code or Claude Haiku 4.5: which to pick
Only Claude Haiku 4.5 has a coding score, 35.6 on the Vibe Coding Index; Seed-2.0-Code has none, so the two cannot be ranked on coding.
Pick Seed-2.0-Code for output tokens 1.7x cheaper ($3.00 vs $5.00 per million) and a larger context window (262K against 200K tokens).
No benchmark has tested both yet. Seed-2.0-Code has none yet; Claude Haiku 4.5 on SWE-bench Verified, SWE-bench Multilingual and LiveBench coding. 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 4.5 has a coding score, so no call is made.
One side not measured
Intelligence
AA Intelligence Index
No call
Only Claude Haiku 4.5 has a AA Intelligence Index result, 16.9.
Directional only
Agentic work
AA Agentic Index
No call
Only Claude Haiku 4.5 has a AA Agentic Index result, 8.0.
Directional only
Reasoning
GPQA Diamond
No call
Only Claude Haiku 4.5 has a GPQA Diamond result, 72.2%.
Directional only
Math
AIME
No call
Only Claude Haiku 4.5 has a AIME result, 82.7%.
Directional only
Knowledge
MMLU Pro
No call
Only Claude Haiku 4.5 has a MMLU Pro result, 78.7%.
Directional only
Web design
Design Arena: websites
No call
Only Claude Haiku 4.5 has a Design Arena: websites result, 1122.
Directional only
Long documents
Listed context window
Seed-2.0-Code
Seed-2.0-Code takes 262K tokens against 200K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Seed-2.0-Code
Seed-2.0-Code $0.0020, Claude Haiku 4.5 $0.0035 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Claude Haiku 4.5 has the number, $0.56.
Directional only
At a glance
- Coding index
- Seed-2.0-Code not benchmarked, Claude Haiku 4.5 35.6 from 4 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 4.5 $5.00 per million output tokens, 1.7x apart.
- Context window
- Seed-2.0-Code takes 262K tokens, Claude Haiku 4.5 200K.
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 Index17 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 4.5 | Leader |
|---|---|---|---|
| SWE-bench Verified | Not measured | 66.6% | Only Claude Haiku 4.5 measured |
| SWE-bench Multilingual | Not measured | 64.7% | Only Claude Haiku 4.5 measured |
| LiveBench coding | Not measured | 48.1% | Only Claude Haiku 4.5 measured |
| LMArena WebDev | Not measured | 1330 | Only Claude Haiku 4.5 measured |
| AA Coding Index | Not measured | 43.9 | Only Claude Haiku 4.5 measured |
| LiveCodeBench (Vals AI) | Not measured | 41.2% | Only Claude Haiku 4.5 measured |
| SWE-bench Verified (Vals AI) | Not measured | 66.6% | Only Claude Haiku 4.5 measured |
| Vibe Code Bench (Vals AI) | Not measured | 11.4% | Only Claude Haiku 4.5 measured |
| Code migration (Vals AI) | Not measured | 7.5% | Only Claude Haiku 4.5 measured |
| ProgramBench (Vals AI) | Not measured | 0.0% | Only Claude Haiku 4.5 measured |
| Terminal-Bench 2.1 (Vals AI) | Not measured | 43.8% | Only Claude Haiku 4.5 measured |
| Terminal-Bench | Not measured | 35.5% | Only Claude Haiku 4.5 measured |
| WeirdML | Not measured | 45.4% | Only Claude Haiku 4.5 measured |
| LMArena Text: coding | Not measured | 1454 | Only Claude Haiku 4.5 measured |
| LMArena Text: software and IT | Not measured | 1439 | Only Claude Haiku 4.5 measured |
| LMArena WebDev: React | Not measured | 1326 | Only Claude Haiku 4.5 measured |
| LMArena WebDev: HTML | Not measured | 1318 | Only Claude Haiku 4.5 measured |
| Neither model has a result on the other 22 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 4.5 | Leader |
|---|---|---|---|
| AA Intelligence Index | Not measured | 16.9 | Only Claude Haiku 4.5 measured |
| Epoch Capabilities Index | Not measured | 142.2 | Only Claude Haiku 4.5 measured |
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index12 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 4.5 | Leader |
|---|---|---|---|
| AA Agentic Index | Not measured | 8.0 | Only Claude Haiku 4.5 measured |
| LiveBench research | Not measured | 42.2% | Only Claude Haiku 4.5 measured |
| LiveBench browser | Not measured | 40.0% | Only Claude Haiku 4.5 measured |
| LiveBench long agentic | Not measured | 11.1% | Only Claude Haiku 4.5 measured |
| Finance Agent (Vals AI) | Not measured | 31.0% | Only Claude Haiku 4.5 measured |
| Tax Agent Bench (Vals AI) | Not measured | 5.9% | Only Claude Haiku 4.5 measured |
| Legal Research Bench (Vals AI) | Not measured | 10.6% | Only Claude Haiku 4.5 measured |
| Excel Modeling Benchmark (Vals AI) | Not measured | 22.7% | Only Claude Haiku 4.5 measured |
| BALROG | Not measured | 31.2% | Only Claude Haiku 4.5 measured |
| DeepResearch Bench | Not measured | 45.5% | Only Claude Haiku 4.5 measured |
| Vending-Bench 2 | Not measured | $459 | Only Claude Haiku 4.5 measured |
| Berkeley Function Calling Leaderboard (BFCL) | Not measured | 68.7% | Only Claude Haiku 4.5 measured |
| Neither model has a result on the other 29 boards here | |||
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index10 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 4.5 | Leader |
|---|---|---|---|
| GPQA Diamond | Not measured | 72.2% | Only Claude Haiku 4.5 measured |
| LiveBench reasoning | Not measured | 61.7% | Only Claude Haiku 4.5 measured |
| MMMU Pro (Vals AI) | Not measured | 46.1% | Only Claude Haiku 4.5 measured |
| GPQA Diamond (Epoch AI run) | Not measured | 71.2% | Only Claude Haiku 4.5 measured |
| ARC-AGI | Not measured | 47.7% | Only Claude Haiku 4.5 measured |
| ARC-AGI-2 | Not measured | 4.0% | Only Claude Haiku 4.5 measured |
| Chess puzzles | Not measured | 8.0% | Only Claude Haiku 4.5 measured |
| LMArena Text: hard prompts | Not measured | 1421 | Only Claude Haiku 4.5 measured |
| LMArena Text: expert | Not measured | 1443 | Only Claude Haiku 4.5 measured |
| LMArena Text: hard prompts in English | Not measured | 1435 | Only Claude Haiku 4.5 measured |
| Neither model has a result on the other 12 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index6 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 4.5 | Leader |
|---|---|---|---|
| AIME | Not measured | 82.7% | Only Claude Haiku 4.5 measured |
| MGSM (Vals AI) | Not measured | 92.2% | Only Claude Haiku 4.5 measured |
| OTIS Mock AIME | Not measured | 66.7% | Only Claude Haiku 4.5 measured |
| MATH level 5 | Not measured | 96.4% | Only Claude Haiku 4.5 measured |
| LMArena Text: math | Not measured | 1398 | Only Claude Haiku 4.5 measured |
| LMArena Text: mathematical work | Not measured | 1430 | Only Claude Haiku 4.5 measured |
| Neither model has a result on the other 7 boards here | |||
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index13 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 4.5 | Leader |
|---|---|---|---|
| MMLU Pro | Not measured | 78.7% | Only Claude Haiku 4.5 measured |
| LegalBench (Vals AI) | Not measured | 81.2% | Only Claude Haiku 4.5 measured |
| CaseLaw (Vals AI) | Not measured | 56.5% | Only Claude Haiku 4.5 measured |
| CorpFin (Vals AI) | Not measured | 60.6% | Only Claude Haiku 4.5 measured |
| TaxEval (Vals AI) | Not measured | 67.5% | Only Claude Haiku 4.5 measured |
| MortgageTax (Vals AI) | Not measured | 62.2% | Only Claude Haiku 4.5 measured |
| MedQA (Vals AI) | Not measured | 79.6% | Only Claude Haiku 4.5 measured |
| MedCode (Vals AI) | Not measured | 32.7% | Only Claude Haiku 4.5 measured |
| SimpleQA Verified | Not measured | 13.2% | Only Claude Haiku 4.5 measured |
| LMArena Text: science | Not measured | 1406 | Only Claude Haiku 4.5 measured |
| LMArena Text: medicine and healthcare | Not measured | 1394 | Only Claude Haiku 4.5 measured |
| LMArena Text: legal and government | Not measured | 1400 | Only Claude Haiku 4.5 measured |
| LMArena Text: business and finance | Not measured | 1400 | Only Claude Haiku 4.5 measured |
| Neither model has a result on the other 5 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 4.5 | Leader |
|---|---|---|---|
| Design Arena: websites | Not measured | 1122 | Only Claude Haiku 4.5 measured |
| Design Arena: UI components | Not measured | 1097 | Only Claude Haiku 4.5 measured |
| Design Arena: game dev | Not measured | 1097 | Only Claude Haiku 4.5 measured |
| Design Arena: data viz | Not measured | 1124 | Only Claude Haiku 4.5 measured |
| Design Arena: 3D | Not measured | 1071 | Only Claude Haiku 4.5 measured |
| Design Arena: all code categories | Not measured | 1114 | Only Claude Haiku 4.5 measured |
| Design Arena: SVG | Not measured | 1025 | Only Claude Haiku 4.5 measured |
| Design Arena: ASCII art | Not measured | 1140 | Only Claude Haiku 4.5 measured |
| LiveBench design | Not measured | 59.9% | Only Claude Haiku 4.5 measured |
GeneralDirectional onlyPublic boards, shown as published, kept out of the index26 boards measured
| Benchmark | Seed-2.0-Code | Claude Haiku 4.5 | Leader |
|---|---|---|---|
| LiveBench data analysis | Not measured | 59.3% | Only Claude Haiku 4.5 measured |
| Public Benefits Bench (Vals AI) | Not measured | 54.3% | Only Claude Haiku 4.5 measured |
| SAGE (Vals AI) | Not measured | 31.8% | Only Claude Haiku 4.5 measured |
| MedScribe (Vals AI) | Not measured | 85.2% | Only Claude Haiku 4.5 measured |
| Vals Multimodal Index | Not measured | 42.9% | Only Claude Haiku 4.5 measured |
| DTBench | Not measured | 73.6% | Only Claude Haiku 4.5 measured |
| LMCA | Not measured | 30.9% | Only Claude Haiku 4.5 measured |
| ExploitBench | Not measured | 13.7% | Only Claude Haiku 4.5 measured |
| LMArena Text | Not measured | 1397 | Only Claude Haiku 4.5 measured |
| LMArena Text: instruction following | Not measured | 1414 | Only Claude Haiku 4.5 measured |
| LMArena Text: creative writing | Not measured | 1371 | Only Claude Haiku 4.5 measured |
| LMArena Text: English | Not measured | 1414 | Only Claude Haiku 4.5 measured |
| LMArena Text: non-English | Not measured | 1377 | Only Claude Haiku 4.5 measured |
| LMArena Text: Chinese | Not measured | 1418 | Only Claude Haiku 4.5 measured |
| LMArena Text: German | Not measured | 1374 | Only Claude Haiku 4.5 measured |
| LMArena Text: Japanese | Not measured | 1338 | Only Claude Haiku 4.5 measured |
| LMArena Text: Korean | Not measured | 1346 | Only Claude Haiku 4.5 measured |
| LMArena Text: French | Not measured | 1411 | Only Claude Haiku 4.5 measured |
| LMArena Text: Spanish | Not measured | 1421 | Only Claude Haiku 4.5 measured |
| LMArena Text: Russian | Not measured | 1381 | Only Claude Haiku 4.5 measured |
| LMArena Text: Polish | Not measured | 1343 | Only Claude Haiku 4.5 measured |
| LMArena Text: multi-turn | Not measured | 1409 | Only Claude Haiku 4.5 measured |
| LMArena Text: longer queries | Not measured | 1427 | Only Claude Haiku 4.5 measured |
| LMArena Text: writing and language | Not measured | 1386 | Only Claude Haiku 4.5 measured |
| LMArena Text: entertainment and media | Not measured | 1369 | Only Claude Haiku 4.5 measured |
| LMArena Document | Not measured | 1420 | Only Claude Haiku 4.5 measured |
| Neither model has a result on the other 20 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
Seed-2.0-Code costs less
Repository review
50K input + 3K output tokens
Seed-2.0-Code costs less
Agent loop
200K input + 10K output tokens
Seed-2.0-Code 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 4.5 |
|---|---|---|
| Maker | ByteDance Seed | Anthropic |
| Weights | No public weights listed | No public weights listed |
| Released | August 12, 2026 | October 15, 2025 |
| Context window | 262K | 200K |
| Input $/Mtok | $0.50 | $1.00 |
| Output $/Mtok | $3.00 | $5.00 |
| Coding index | Not benchmarked | 35.6 |
| Independent measurements behind it | 0 | 4 |
| Cost per solved task | Not computable | $0.56 |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Seed-2.0-Code better than Claude Haiku 4.5 for coding?
Only Claude Haiku 4.5 has a coding score, 35.6 on the Vibe Coding Index; Seed-2.0-Code has none, so the two cannot be ranked on coding. Pick Seed-2.0-Code for output tokens 1.7x cheaper ($3.00 vs $5.00 per million) and a larger context window (262K against 200K tokens).
Which is cheaper, Seed-2.0-Code or Claude Haiku 4.5?
Seed-2.0-Code costs $0.50 per million input tokens and $3.00 per million output tokens; Claude Haiku 4.5 costs $1.00 and $5.00. Cost per solved task is known for Claude Haiku 4.5 only.
Which has the bigger context window, Seed-2.0-Code or Claude Haiku 4.5?
Seed-2.0-Code, with 262K tokens against 200K.
Has any benchmark tested both Seed-2.0-Code and Claude Haiku 4.5?
No benchmark has tested both yet. Seed-2.0-Code has none yet; Claude Haiku 4.5 on SWE-bench Verified, SWE-bench Multilingual and LiveBench coding. Compare them on price and context instead. Data as of October 22, 2026.