This model is deprecated. We only continue performance benchmarking for the default 10k input token workload. Results for other workloads are historical and no longer updated.

SpaceXAI has launched a newer release, Grok 4.3. We suggest considering it instead.

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Proprietary model

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Released April 2026

Grok 4.20 0309 v2 (Reasoning) API Provider Benchmarking & Analysis

Model Comparison

This analysis is intended to support you in choosing the best API provider of Grok 4.20 0309 v2 (Reasoning) for your use-case.

Fastest

#1
AzureAzure
211.3 t/s
#2
SpaceXAISpaceXAI
100.3 t/s

Output speed

Total 2 providers

Lowest Latency

#1
AzureAzure
9.99 s
#2
SpaceXAISpaceXAI
19.35 s

Time to first answer token

Total 2 providers

Lowest Price

#1
SpaceXAISpaceXAI
$0.64
#2
AzureAzure
$2.40

Blended price (per 1M tokens)

Total 2 providers

Grok 4.20 0309 v2 is available through 2 API providers, each offering different performance characteristics and pricing. Below is a comparison of the key metrics across providers.

  • For output speed, the top providers are Azure (211.3 t/s) and SpaceXAI (100.3 t/s).
  • For latency, Azure (9.99s) and SpaceXAI (19.35s) offer the lowest time to first answer token.
  • For pricing, SpaceXAI (0.64) and Azure (2.40) offer the lowest blended prices per 1M tokens.
  • Azure offers the best performance with both the highest speed and lowest latency. For cost optimization, SpaceXAI provides the most competitive pricing.

Highlights

Output tokens per second · Higher is better
Seconds to first answer token received · Lower is better
USD per 1M tokens (blended) · Lower is better

Pricing

Pricing: Cache Hit, Input, and Output

Price (USD per M Tokens) · Lower is better · 10,000 input tokens

Pricing: Blended Price

Blended at 7:2:1 (cache-input-output) · USD per 1M tokens (blended) · Lower is better

Pricing: Cache Discount

1 - (cache hit price / input price) · Higher is better

Output Speed vs. Price

Blended at 7:2:1 (cache-input-output) · Output speed: output tokens per second · USD per 1M tokens (blended)
Most attractive quadrant
Pareto line

Speed

Measured by Output Speed (tokens per second)

Output Speed: Grok 4.20 0309 v2 (Reasoning)

Output speed: output tokens per second · 10,000 input tokens

Latency vs. Output Speed

Latency: seconds to first token received · Output speed: output tokens per second · 10,000 input tokens
Most attractive quadrant

Latency

Measured by Time (seconds) to First Token

Time to First Answer Token

Seconds to first token received · Lower is better · 10,000 input tokens

End-to-End Response Time

Seconds to output 500 tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed

End-to-End Response Time

Seconds to output 500 tokens, including reasoning model 'thinking' time · Lower is better · 10,000 input tokens

Key Comparison Metrics & API Features

SpaceXAI logoSpaceXAI
2M
Proprietary
--
102
20.12
25.05
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Microsoft Azure logoMicrosoft Azure
262k
Proprietary
--
212
10.25
12.60
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Frequently Asked Questions

Common questions about Grok 4.20 0309 v2 (Reasoning) providers