Grok 4.20 Multi-Agent vs Grok Build 0.1
Grok Build 0.1 costs 1.3x less per output token than Grok 4.20 Multi-Agent ($2.00 vs $2.50 per million). Updated October 21, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- No data
- Output $/M
- $2.50
- Coding
- No data
- Overall
- No data
- Output $/M
- $2.00
Grok 4.20 Multi-Agent or Grok Build 0.1: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick Grok 4.20 Multi-Agent for a larger context window (2M against 256K tokens).
No benchmark has tested both yet. Grok 4.20 Multi-Agent has none yet; Grok Build 0.1 on AA Coding Index, Vibe Code Bench (Vals AI) and AA Intelligence Index. 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
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
No call
Only Grok Build 0.1 has a AA Intelligence Index result, 27.2.
Directional only
Long documents
Listed context window
Grok 4.20 Multi-Agent
Grok 4.20 Multi-Agent takes 2M tokens against 256K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Grok Build 0.1
Grok 4.20 Multi-Agent $0.0025, Grok Build 0.1 $0.0020 per turn.
List prices
At a glance
- Coding index
- Grok 4.20 Multi-Agent not benchmarked, Grok Build 0.1 not benchmarked.
- 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
- Grok 4.20 Multi-Agent $2.50 against Grok Build 0.1 $2.00 per million output tokens, 1.3x apart.
- Context window
- Grok 4.20 Multi-Agent takes 2M tokens, Grok Build 0.1 256K.
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 Index2 boards measured
| Benchmark | Grok 4.20 Multi-Agent | Grok Build 0.1 | Leader |
|---|---|---|---|
| AA Coding Index | Not measured | 51.5 | Only Grok Build 0.1 measured |
| Vibe Code Bench (Vals AI) | Not measured | 13.4% | Only Grok Build 0.1 measured |
| Neither model has a result on the other 37 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
| Benchmark | Grok 4.20 Multi-Agent | Grok Build 0.1 | Leader |
|---|---|---|---|
| AA Intelligence Index | Not measured | 27.2 | Only Grok Build 0.1 measured |
| Neither model has a result on the other 1 board 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 4.20 Multi-Agent | SpaceXAI Grok Build 0.1 |
|---|---|---|
| Maker | xAI | xAI |
| Weights | No public weights listed | No public weights listed |
| Released | March 31, 2026 | May 20, 2026 |
| Context window | 2M | 256K |
| Input $/Mtok | $1.25 | $1.00 |
| Output $/Mtok | $2.50 | $2.00 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 1 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Grok 4.20 Multi-Agent better than Grok Build 0.1 for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Grok 4.20 Multi-Agent for a larger context window (2M against 256K tokens).
Which is cheaper, Grok 4.20 Multi-Agent or Grok Build 0.1?
Grok 4.20 Multi-Agent costs $1.25 per million input tokens and $2.50 per million output tokens; Grok Build 0.1 costs $1.00 and $2.00. Cost per solved task is known for neither of them.
Which has the bigger context window, Grok 4.20 Multi-Agent or Grok Build 0.1?
Grok 4.20 Multi-Agent, with 2M tokens against 256K.
Has any benchmark tested both Grok 4.20 Multi-Agent and Grok Build 0.1?
No benchmark has tested both yet. Grok 4.20 Multi-Agent has none yet; Grok Build 0.1 on AA Coding Index, Vibe Code Bench (Vals AI) and AA Intelligence Index. Compare them on price and context instead. Data as of October 21, 2026.