Grok 4.20 Multi Agent vs Grok 4.5
At a Glance
| Compare | Grok 4.5xAI | |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v4.4 | #16 of 5764.3 score · 2/3 sources · provisional · missing LiveBench · full-core range 42.8–76.2 | UnrankedNot in the 57-model eligible cohort |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $1.25Xai ↗ · Sep 3, 2026 | $2.00Xai ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | $2.50Xai ↗ · Sep 3, 2026 | $6.00Xai ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 1,000K | 500K |
| Model facts checked | Aug 29, 2026View model evidence → | Sep 3, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.5 |
|---|---|---|
| ARC-AGI-1verified-v1-302d8267c052 · verified_score · leader | 89.50100% of row best · percent · Grok 4.20 (Reasoning) | 87.1797% of row best · percent · Grok 4.5 (Medium) |
| ARC-AGI-2verified-v2-bca68e12cc9a · verified_score · leader | 65.14100% of row best · percent · Grok 4.20 (Reasoning) | 52.6481% of row best · percent · Grok 4.5 (Medium) |
| LMArena Search Arenasearch-2026-10-13-a64ca3b12b6e · arena_rating · statistical tie | 1,204.8099% of row best · rating · grok-4.20-multi-agent-beta-0309; 95% CI [1199.36322528, 1210.23649279]; votes 126238; rank 18 | 1,215.94100% of row best · rating · grok-4.5; 95% CI [1210.07957437, 1221.79459071]; votes 76458; rank 13 |
| LMArena Text Arenatext-2026-10-15-a64ca3b12b6e · arena_rating · statistical tie | 1,450.27100% of row best · rating · grok-4.20-multi-agent-beta-0309; 95% CI [1446.59423552, 1453.95404223]; votes 64946; rank 52 | 1,447.97100% of row best · rating · grok-4.5; 95% CI [1443.63647354, 1452.30434473]; votes 39896; rank 56 |
| LMArena Vision Arenavision-2026-10-09-a64ca3b12b6e · arena_rating · leader | 1,258.9798% of row best · rating · grok-4.20-multi-agent-beta-0309; 95% CI [1252.84769478, 1265.09117861]; votes 24543; rank 57 | 1,288.17100% of row best · rating · grok-4.5; 95% CI [1280.98331591, 1295.35286239]; votes 11764; rank 31 |
| Overall ResultCounted from the protocol-matched rows above · 2 ties | 2 benchmark winsOverall lead | 1 benchmark win |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Side-by-Side Facts
| Field | Grok 4.20 Multi-Agent | Grok 4.5 |
|---|---|---|
| Developer | xAI | xAI |
| Family | Grok 4 20 | Grok 4 |
| Model | Grok 4.20 Multi-Agent | Grok 4.5 |
| Version | Grok 4.20 Multi-Agent | Grok 4.5 |
| Lifecycle | preview | active |
| Released | Unknown | 2026-07-16 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
| Context window | 1,000K | 500K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Xai (Standard) | Xai (Standard) |
| Capabilities | generation, reasoning, research, tools | chat, generation, reasoning, structured_outputs, tools |
Grok 4.20 Multi Agent Capabilities
Grok 4.5 Capabilities
Related Comparisons
All image comparisons →| A | Pair | B | Context |
|---|---|---|---|
 GPT-6 AstraOpenAI | vs | cross-developer peersimage, text | |
| vs | Grok 4.6xAI | family variantsimage, text | |
| vs | family variantsimage, text | ||
Claude Fable 5Anthropic | vs | cross-developer peersimage, text | |
Claude Opus 4.8Anthropic | vs | cross-developer peersimage, text | |
 Antigravity AgentGoogle DeepMind | vs | cross-developer peerstext | |
Gemini Deep Research MaxGoogle DeepMind | vs | cross-developer peerstext | |
Gemini Deep ResearchGoogle DeepMind | vs | cross-developer peerstext | |
GPT-5.1OpenAI | vs | cross-developer peersimage, text | |
GPT-5.4 ProOpenAI | vs | cross-developer peersimage, text | |
| vs | Grok 4.3xAI | family variantsimage, text |
Primary Evidence
Sources and Freshness
Questions
Grok 4.20 Multi Agent vs Grok 4.5 FAQs
Is Grok 4.20 Multi Agent or Grok 4.5 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Grok 4.20 Multi Agent and Grok 4.5, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Grok 4.20 Multi Agent or Grok 4.5?+
Grok 4.20 Multi Agent is $1.25 and Grok 4.5 is $2.00 per million tokens, so Grok 4.20 Multi Agent is cheaper on this metric. Grok 4.20 Multi Agent is $2.50 and Grok 4.5 is $6.00 per million tokens, so Grok 4.20 Multi Agent is cheaper on this metric.
Which has a larger context window, Grok 4.20 Multi Agent or Grok 4.5?+
Grok 4.20 Multi Agent has the larger sourced context window. Grok 4.20 Multi Agent supports 1,000,000 tokens and Grok 4.5 supports 500,000 tokens.
Which performs better in benchmarks, Grok 4.20 Multi Agent or Grok 4.5?+
Grok 4.20 Multi Agent leads the current overall benchmark count. The result uses 5 protocol-matched benchmarks from 2 publishers; it is not a universal quality score.
Can Grok 4.20 Multi Agent or Grok 4.5 be self-hosted?+
Both models have the same sourced self-hosting status: unsupported. Grok 4.20 Multi Agent is not marked open weight; Grok 4.5 is not marked open weight.
Can Grok 4.20 Multi Agent and Grok 4.5 understand images?+
Grok 4.20 Multi Agent is documented with image input; Grok 4.5 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Grok 4.20 Multi Agent or Grok 4.5?+
Neither model has a sourced maximum output in this comparison, so a larger limit cannot be determined.
Do Grok 4.20 Multi Agent and Grok 4.5 support reasoning and tool use?+
Grok 4.20 Multi Agent: reasoning, tool calling, and image input. Grok 4.5: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Grok 4.20 Multi Agent or Grok 4.5?+
Grok 4.20 Multi Agent has 1 sourced provider route; Grok 4.5 has 1, a tie.
Which offers better value, Grok 4.20 Multi Agent or Grok 4.5?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.