Grok 4.20 Multi-Agent vs o4 Mini High

Grok 4.20 Multi-Agent costs 1.8x less per output token than o4 Mini High ($2.50 vs $4.40 per million). Updated October 21, 2026; no benchmark has tested both models yet.

Replace Grok 4.20 Multi-Agent Replace o4 Mini High

Grok 4.20 Multi-AgentxAI

Coding: No data
Overall: No data
Output $/M: $2.50

o4 Mini HighOpenAI

Coding: No data
Overall: No data
Output $/M: $4.40

vs $2.50 vs $4.40 per 1M output tokens. Grok 4.20 Multi-Agent is 1.8x cheaper.

Grok 4.20 Multi-Agent or o4 Mini High: 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 output tokens 1.8x cheaper ($2.50 vs $4.40 per million) and a larger context window (2M against 200K tokens).

Model AGrok 4.20 Multi-AgentxAINot benchmarkedNo coding benchmarkNo cost per solved task Model Bo4 Mini HighOpenAINot benchmarkedNo coding benchmarkNo cost per solved task

No benchmark has tested both yet. Grok 4.20 Multi-Agent has none yet; o4 Mini High on ALE-Bench and GDPval. 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
Long documents
Listed context window
Grok 4.20 Multi-Agent
Grok 4.20 Multi-Agent takes 2M tokens against 200K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Grok 4.20 Multi-Agent
Grok 4.20 Multi-Agent $0.0025, o4 Mini High $0.0033 per turn.
List prices

At a glance

Coding index: Grok 4.20 Multi-Agent not benchmarked, o4 Mini High 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 o4 Mini High $4.40 per million output tokens, 1.8x apart.
Context window: Grok 4.20 Multi-Agent takes 2M tokens, o4 Mini High 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 Index1 board measured

Coding benchmarks for Grok 4.20 Multi-Agent and o4 Mini High
Benchmark	Grok 4.20 Multi-Agent	o4 Mini High	Leader
ALE-Bench	Not measured	826.2	Only o4 Mini High measured
Neither model has a result on the other 37 boards here

Agentic workDirectional onlyPublic boards, shown as published, kept out of the index1 board measured

Agentic work benchmarks for Grok 4.20 Multi-Agent and o4 Mini High
Benchmark	Grok 4.20 Multi-Agent	o4 Mini High	Leader
GDPval	Not measured	25.3%	Only o4 Mini High measured
Neither model has a result on the other 38 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 4.20 Multi-Agent$0.0025Fits in one request

o4 Mini High$0.0033Fits in one request

Grok 4.20 Multi-Agent costs less

Repository review

50K input + 3K output tokens

Grok 4.20 Multi-Agent$0.070Fits in one request

o4 Mini High$0.068Fits in one request

o4 Mini High costs less

Agent loop

200K input + 10K output tokens

Grok 4.20 Multi-Agent$0.275Fits in one request

o4 Mini High$0.264Exceeds the context window

o4 Mini High 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.

Specifications of Grok 4.20 Multi-Agent and o4 Mini High
Specification	SpaceXAI Grok 4.20 Multi-Agent	OpenAI o4 Mini High
Maker	xAI	OpenAI
Weights	No public weights listed	No public weights listed
Released	March 31, 2026	April 16, 2025
Context window	2M	200K
Input $/Mtok	$1.25	$1.10
Output $/Mtok	$2.50	$4.40
Coding index	Not benchmarked	Not benchmarked
Independent measurements behind it	0	0
Cost per solved task	Not computable	Not computable
Source	OpenRouter listing	OpenRouter listing

Questions

Is Grok 4.20 Multi-Agent better than o4 Mini High for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Grok 4.20 Multi-Agent for output tokens 1.8x cheaper ($2.50 vs $4.40 per million) and a larger context window (2M against 200K tokens).

Which is cheaper, Grok 4.20 Multi-Agent or o4 Mini High?

Grok 4.20 Multi-Agent costs $1.25 per million input tokens and $2.50 per million output tokens; o4 Mini High costs $1.10 and $4.40. Cost per solved task is known for neither of them.

Which has the bigger context window, Grok 4.20 Multi-Agent or o4 Mini High?

Grok 4.20 Multi-Agent, with 2M tokens against 200K.

Has any benchmark tested both Grok 4.20 Multi-Agent and o4 Mini High?

No benchmark has tested both yet. Grok 4.20 Multi-Agent has none yet; o4 Mini High on ALE-Bench and GDPval. Compare them on price and context instead. Data as of October 21, 2026.