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Gemini 2.5 Flash Lite vs Grok 4.5

Output tokens cost $0.40 per million on Gemini 2.5 Flash Lite and $6.00 per million on Grok 4.5. Input tokens cost $0.10 per million on Gemini 2.5 Flash Lite and $2.00 per million on Grok 4.5. Cached input tokens are billed at $0.01 per million on Gemini 2.5 Flash Lite and $0.50 per million on Grok 4.5. Context lengths are 1,048,576 tokens on Gemini 2.5 Flash Lite and 500,000 tokens on Grok 4.5. Time to first token (TTFT) measured on AIHubMix is 0.9s on Gemini 2.5 Flash Lite and 2.0s on Grok 4.5. Measured output throughput is 89.0 tok/s on Gemini 2.5 Flash Lite and 26.5 tok/s on Grok 4.5. On the LMArena coding leaderboard Gemini 2.5 Flash Lite scores 1424 and Grok 4.5 scores 1523.

GoogleGemini 2.5 Flash LiteGrokGrok 4.5
+ Add model · 2/4
Google logo
Gemini 2.5 Flash Lite
Google · text, image, audio, video → text

Gemini 2.5 Flash-Lite is a balanced model from Google, optimized for applications that require low-latency performance. It retains the practical capabilities of the Gemini 2.5 family, including configurable reasoning based on budget, integration with tools such as grounding via Google Search and code execution, multimodal input support, and an ultra-long context window of up to 1 million tokens, delivering a strong balance between efficiency, functionality, and cost.

Input$0.10 /M
Output$0.40 /M
Details
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
Details

Pricing & Specifications

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

Gemini 2.5 Flash Lite
Grok 4.5
Input /M
$0.10
$2.00
Output /M
$0.40
$6.00
Cache read /M
$0.01
$0.50
Context length
1,048,576
500,000
Max output
65,536
500,000
Time to First Token
0.9 s
2.0 s
Throughput
89.0 tok/s
26.5 tok/s
Modalities
textimageaudiovideo
textimage
Supported Parameters
toolsfunction callingstructured outputslong context
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.

gemini-2.5-flash-litegrok-4.5

Tokens / day

-

Requests / day

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Performance Past 3 Days

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

gemini-2.5-flash-litegrok-4.5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

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

Text
gemini-2.5-flash-litegrok-4.5
13801420146015001540
Overall
14111470
Coding
14241523
Math
14061478
Hard prompts
14201495
Instruction following
14021466
Multi-turn
14031477
Creative writing
13971449
Longer query
14191485
Chinese
14451511
English
14121475
Vision
gemini-2.5-flash-litegrok-4.5
1180124013001360
Overall
12141282
OCR
12231295
Diagram
12361321
Homework
12371328

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.

Gemini 2.5 Flash Lite
$12.00 /mo
Grok 4.5
$210 /mo

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

FAQ

Which is cheaper: Gemini 2.5 Flash Lite, Grok 4.5?

Gemini 2.5 Flash Lite: $0.40/M output tokens; Grok 4.5: $6.00/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Grok 4.5: 1523; Gemini 2.5 Flash Lite: 1424 (LMArena coding leaderboard).

Which responds faster?

Gemini 2.5 Flash Lite: 0.9s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Gemini 2.5 Flash Lite accepts 1,048,576 and Grok 4.5 accepts 500,000 input tokens. Maximum output per request is 65,536 tokens on Gemini 2.5 Flash Lite and 500,000 tokens on Grok 4.5.

Which one generates tokens faster?

Gemini 2.5 Flash Lite at 89.0 tok/s and Grok 4.5 at 26.5 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Gemini 2.5 Flash Lite accepts text, image, audio and video input and supports tool calling, function calling, structured outputs and long context; Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context.

Can I call Gemini 2.5 Flash Lite 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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