o3 vs Grok 4.20 Multi Agent

This comparison does not currently contain a protocol-matched coding benchmark for both o3 and Grok 4.20 Multi Agent, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.

o3 is $1.00 and Grok 4.20 Multi Agent is $1.25 per million tokens, so o3 is cheaper on this metric. o3 is $4.00 and Grok 4.20 Multi Agent is $2.50 per million tokens, so Grok 4.20 Multi Agent is cheaper on this metric.

Grok 4.20 Multi Agent has the larger sourced context window. o3 supports 200K and Grok 4.20 Multi Agent supports 1,000K.

There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.

Both models have the same recorded self-hosting status: unsupported. o3 is not marked open weight; Grok 4.20 Multi Agent is not marked open weight.

o3 is documented with image input; Grok 4.20 Multi Agent is documented with image input. This reflects supported input modalities, not vision quality.

Neither has a larger sourced maximum output. o3 is 100K and Grok 4.20 Multi Agent is —.

o3: reasoning, tool calling, and image input. Grok 4.20 Multi Agent: reasoning, tool calling, and image input. Feature support does not establish relative quality.

o3 has 2 sourced provider routes; Grok 4.20 Multi Agent has 1, so o3 has broader tracked availability.

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.