grok-4.20-multi-agent-beta-0309: benchmark scores, price and ranking

grok-4.20-multi-agent-beta-0309 from xAI ranks #338 of 743 LLMs on the LLMs Tiger aggregate benchmark score (48.6), based on 2 benchmark results captured up to 2026-10-13.

Organisation: xAI
Type: Preview release
Open weights: No
Cheapest API price: $1.25 in / $2.50 out per million tokens (via xai, observed 2026-10-13T20:47Z)
Aggregate rank: #338 of 743 (score 48.6)

Across the 2 benchmarks where at least ten models are scored, grok-4.20-multi-agent-beta-0309 is in the top 10% on 0 and in the top half on 1.

Its cheapest listed input price, $1.25 per million tokens, is lower than that of 26% of the 427 models with a listed price.

grok-4.20-multi-agent-beta-0309 benchmark results

grok-4.20-multi-agent-beta-0309 benchmark scores, ranked against all models measured on each benchmark
Benchmark	Score	Rank	Source	Captured
LMArena Search Elo	1,204	#8 of 28	LMArena	2026-10-13
LMArena Text Elo	1,471	#26 of 28	LMArena	2026-10-05

About grok-4.20-multi-agent-beta-0309

grok-4.20-multi-agent-beta-0309 is a preview release from xAI. The cheapest API listing we track charges $1.25 per million input tokens and $2.50 per million output tokens, through xai. We hold 2 benchmark results for it across 1 area, and none is in the top tenth of its board.

Where grok-4.20-multi-agent-beta-0309 stands

On our aggregate score, grok-4.20-multi-agent-beta-0309 is #338 of 743 ranked models, around the middle of the table. Its score is 48.6; the scale is centred on 50, so it sits 1.4 points below the typical model. That beats 55% of the ranked field. Among the 26 ranked xAI models it is #19. The next one up is grok-4.20-beta-0309-reasoning at 48.7. The next one down is Grok 4 (Fast Reasoning) at 47.7.

grok-4.20-multi-agent-beta-0309, benchmark by benchmark

LMArena Search Elo puts grok-4.20-multi-agent-beta-0309 at 1,204, #8 of 28. That beats 71% of the models tested, but 49 points short of claude-opus-4-6-search (1,253). The results either side are gpt-5.2-search (1,207) and gpt-5.1-search (1,199). It covers crowd-voted web-search answers. The board median is 1,176, so grok-4.20-multi-agent-beta-0309 is 28 points above it. Source: LMArena, captured 2026-10-13.

LMArena Text Elo is a weak spot. grok-4.20-multi-agent-beta-0309 scores 1,471, #26 of 28, behind 89% of the models measured. The leader, gemini-4-argon-high, reaches 1,525. It covers head-to-head chat preference (crowd votes). The board median is 1,478, so grok-4.20-multi-agent-beta-0309 is 6 points below it. Source: LMArena, captured 2026-10-05.

Strengths and weaknesses

General knowledge and chat: uneven, ahead of 39% of the field on average across 2 benchmarks. Its best board here is LMArena Search Elo (#8 of 28) and its weakest is LMArena Text Elo (#26 of 28).

Price and value

The median input price across the 427 priced models is $0.500 per million tokens, so grok-4.20-multi-agent-beta-0309 costs more than the typical listing. Models that score within 1.5 points or better and cost less: Qwen2.5-Coder-7B-Instruct ($0.010, 49.5), DeepSeek V4.1 Flash (high) ($0.010, 48.9), DeepSeek V4 Flash 0731 (max) ($0.016, 53.1). Similar scores cost more on Codex Mini (Latest) ($1.50) and Magistral Medium ($1.50).

Reading these numbers

The 2 scores on this page come from 1 source: LMArena (2). No official leaderboard supplied any of them, so treat them as third-party measurements. With 2 results the aggregate rank can move a lot when one new score arrives.

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