Grok Build 0.1 vs Hermes 4 405B
Grok Build 0.1 leads Hermes 4 405B on the Artificial Analysis Intelligence Index, 27.2 to 7.5, and Grok Build 0.1 costs 1.5x less per output token ($2.00 vs $3.00 per million). Updated October 22, 2026; 1 benchmarks have a result for both.
Grok Build 0.1 or Hermes 4 405B: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick Grok Build 0.1 for output tokens 1.5x cheaper ($2.00 vs $3.00 per million) and a larger context window (256K against 131K tokens).
- Shared results
- 1
- Grok Build 0.1 only
- 2
- Hermes 4 405B only
- 1
- Like-for-like categories
- 1 of 9
Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.
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
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
Grok Build 0.1
Grok Build 0.1 leads, 27.2 against 7.5.
Same board, both measured
Long documents
Listed context window
Grok Build 0.1
Grok Build 0.1 takes 256K tokens against 131K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Grok Build 0.1
Grok Build 0.1 $0.0020, Hermes 4 405B $0.0025 per turn.
List prices
At a glance
- Coding index
- Grok Build 0.1 not benchmarked, Hermes 4 405B not benchmarked.
- Widest category
- Intelligence, 19.7 points apart on average over 1 shared benchmark.
- Widest single gap
- AA Intelligence Index: Grok Build 0.1 27.2 against Hermes 4 405B 7.5, 19.7 points apart on a 0 to 100 scale.
- Output price
- Grok Build 0.1 $2.00 against Hermes 4 405B $3.00 per million output tokens, 1.5x apart.
- Context window
- Grok Build 0.1 takes 256K tokens, Hermes 4 405B 131K.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | Grok Build 0.1 | Bars | Hermes 4 405B | Ties |
|---|---|---|---|---|
| Intelligence | 1 | 0 | ||
| All shared boards | 1 | 0 |
CodingDirectional onlySix of these boards feed the Vibe Coding Index2 boards, none shared
| Benchmark | Grok Build 0.1 | Hermes 4 405B | Leader |
|---|---|---|---|
| AA Coding Index | 51.5 | Not measured | Only Grok Build 0.1 measured |
| Vibe Code Bench (Vals AI) | 13.4% | Not measured | Only Grok Build 0.1 measured |
| Neither model has a result on the other 41 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Grok Build 0.1 | Hermes 4 405B | Leader |
|---|---|---|---|
| AA Intelligence Index | 27.2 | 7.5 | Grok Build 0.1 |
| Neither model has a result on the other 1 board here | |||
Agentic workNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Grok Build 0.1 | Hermes 4 405B | Leader |
|---|---|---|---|
| Neither model has a result on 42 boards here | |||
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared
| Benchmark | Grok Build 0.1 | Hermes 4 405B | Leader |
|---|---|---|---|
| Kagi LLM Benchmark | Not measured | 55.8% | Only Hermes 4 405B measured |
| Neither model has a result on the other 22 boards here | |||
MathNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Grok Build 0.1 | Hermes 4 405B | Leader |
|---|---|---|---|
| Neither model has a result on 14 boards here | |||
KnowledgeNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Grok Build 0.1 | Hermes 4 405B | Leader |
|---|---|---|---|
| Neither model has a result on 20 boards here | |||
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Grok Build 0.1 | Hermes 4 405B | Leader |
|---|---|---|---|
| Neither model has a result on 9 boards here | |||
GeneralNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Grok Build 0.1 | Hermes 4 405B | Leader |
|---|---|---|---|
| Neither model has a result on 48 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Grok Build 0.1 | Hermes 4 405B | Leader |
|---|---|---|---|
| Neither model has a result on 5 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
Grok Build 0.1 costs less
Repository review
50K input + 3K output tokens
Grok Build 0.1 costs less
Agent loop
200K input + 10K output tokens
Grok Build 0.1 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 | SpaceXAI Grok Build 0.1 | Nous Hermes 4 405B |
|---|---|---|
| Maker | xAI | Nous Research |
| Weights | No public weights listed | Open weights |
| Released | May 20, 2026 | August 26, 2025 |
| Context window | 256K | 131K |
| Input $/Mtok | $1.00 | $1.00 |
| Output $/Mtok | $2.00 | $3.00 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 1 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Grok Build 0.1 better than Hermes 4 405B for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Grok Build 0.1 for output tokens 1.5x cheaper ($2.00 vs $3.00 per million) and a larger context window (256K against 131K tokens).
Which is cheaper, Grok Build 0.1 or Hermes 4 405B?
Grok Build 0.1 costs $1.00 per million input tokens and $2.00 per million output tokens; Hermes 4 405B costs $1.00 and $3.00. Cost per solved task is known for neither of them.
Which has the bigger context window, Grok Build 0.1 or Hermes 4 405B?
Grok Build 0.1, with 256K tokens against 131K.
How many benchmarks is the Grok Build 0.1 vs Hermes 4 405B comparison based on?
1 benchmarks have a result for both models as of October 22, 2026. Grok Build 0.1's coding index rests on 1 independent benchmark and Hermes 4 405B's on 0. Where only one model has a result, the page says so instead of naming a winner.