Models

Claude 3 Sonnet 20240229 vs Grok 4.5

Output tokens cost $16.50 per million on Claude 3 Sonnet 20240229 and $6.00 per million on Grok 4.5. Input tokens cost $3.30 per million on Claude 3 Sonnet 20240229 and $2.00 per million on Grok 4.5. Cached input tokens are billed at $3.30 per million on Claude 3 Sonnet 20240229 and $0.50 per million on Grok 4.5. Time to first token (TTFT) measured on AIHubMix is 0.8s on Claude 3 Sonnet 20240229 and 1.6s on Grok 4.5. Measured output throughput is 66.6 tok/s on Claude 3 Sonnet 20240229 and 25.2 tok/s on Grok 4.5. On the LMArena coding leaderboard Claude 3 Sonnet 20240229 scores 1317 and Grok 4.5 scores 1523.

AnthropicClaude 3 Sonnet 20240229GrokGrok 4.5
Anthropic logo
Claude 3 Sonnet 20240229
Anthropic · text, image → text

Input$3.30 /M
Output$16.50 /M
Grok logo
Grok 4.5
Grok · text, image → text

Grok 4.5 was trained on datasets spanning knowledge in coding, science, engineering, and math. With both intelligent and efficient reasoning, Grok 4.5 excels at real engineering tasks and exceeds comparable leading models at these tasks.

Input$2.00 /M
Output$6.00 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Claude 3 Sonnet 20240229
Grok 4.5
Input /M
$3.30
$2.00
Output /M
$16.50
$6.00
Cache read /M
$3.30
$0.50
Context length
NaN
500,000
Max output
0
500,000
Time to First Token
0.8 s
1.6 s
Throughput
66.6 tok/s
25.2 tok/s
Modalities
textimage
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputslong context
API Formats
Released
-
July 2026

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

claude-3-sonnet-20240229grok-4.5

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

claude-3-sonnet-20240229grok-4.5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
claude-3-sonnet-20240229grok-4.5
12201300138014601540
Overall
12801470
Coding
13171523
Math
12531478
Hard prompts
12811495
Instruction following
12671466
Multi-turn
12771477
Creative writing
12451449
Longer query
12851485
Chinese
12751511
English
12881475
Vision
claude-3-sonnet-20240229grok-4.5
1000110012001300
Overall
10161282
OCR
12951295
Diagram
13211321
Homework
13281328

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

Grok 4.5
$210 /mo
Claude 3 Sonnet 20240229
$446 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Claude 3 Sonnet 20240229, Grok 4.5?

Grok 4.5: $6.00/M output tokens; Claude 3 Sonnet 20240229: $16.50/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Grok 4.5: 1523; Claude 3 Sonnet 20240229: 1317 (LMArena coding leaderboard).

Which responds faster?

Claude 3 Sonnet 20240229: 0.8s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

Which one generates tokens faster?

Claude 3 Sonnet 20240229 at 66.6 tok/s and Grok 4.5 at 25.2 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Claude 3 Sonnet 20240229 accepts text and image input; Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context.

Can I call Claude 3 Sonnet 20240229 and Grok 4.5 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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