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Precision Benchmarks

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© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

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  3. Grok 3 vs OpenAI: o3 Mini High

Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

Grok 3 vs OpenAI: o3 Mini High benchmark

In this head-to-head showdown, OpenAI: o3 Mini High is more budget-friendly at $4.4/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Choose Grok 3 if your priority is peak reasoning, complex code generation, and top preference Elo. Choose OpenAI: o3 Mini High if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Executive Verdict Summary

OpenAI: o3 Mini High holds empirical advantage (3 of 3 metrics)

Coding / SWESWE-bench
Grok 3Top code solve rate
ReasoningGPQA / Live
Grok 3Top logical accuracy
Best Value$/1M Tok
OpenAI: o3 Mini HighLowest API billing cost
Speed / TokTok/Sec
Grok 3Fastest stream rate

Verified Advantage Breakdown

3 benchmarks evaluated across capability, speed, and cost

Grok 3 (0)OpenAI: o3 Mini High (3)
Grok 3
0 of 3 Wins
Competitive baseline across remaining benchmarks
OpenAI: o3 Mini High
3 of 3 Wins
✓Input price✓Output price✓Context window
xAI
Grok 3

Previous xAI generation before Grok 4. Kept for grok 3 vs grok 4.

Elo 1,405In: $3 · Out: $15/1M
OpenAI
Leads 3 of 3
OpenAI: o3 Mini High

Auto-discovered from OpenRouter (openai/o3-mini-high). Preview until a second source matches.

In: $1.1 · Out: $4.4/1M
Top Rival Showdowns for Grok 3
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Gemini 3 Provs DeepSeek V4 Provs Qwen 3 Max
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar LeaderOpenAI: o3 Mini High Wins

OpenAI: o3 Mini High

$4.4 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top standard models across 6 key capability dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
0–100 %ile

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

Grok 3 (6)vsOpenAI: o3 Mini High (3)
Grok 3: 6W (67%)Overall: Grok 3OpenAI: o3 Mini High: 3W (33%)
← Grok 3OpenAI: o3 Mini High →
🏆Grok 3 Leads(4/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Benchmark
Grok 3vsOpenAI: o3 Mini High
Preference Elo
1,405vs—
Coding Elo
—vs—
SWE-bench
51.4%vs—
LiveBench
60.2%vs—
GPQA Diamond
74.2%vs—
Grok 3: 4WOpenAI: o3 Mini High: 0W
🏆Grok 3 Leads(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Grok 3vsOpenAI: o3 Mini High
Output speed
88 tok/svs—
Time to first token
250 msvs—
Grok 3: 2WOpenAI: o3 Mini High: 0W
🏆OpenAI: o3 Mini High Leads(3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Grok 3vsOpenAI: o3 Mini High
Output price
$15/1Mvs$4.4/1M+$10.6/1M
Input price
$3/1Mvs$1.1/1M+$1.9/1M
Context window
131kvs200k+69k
Grok 3: 0WOpenAI: o3 Mini High: 3W

Side-by-Side Benchmark Matrix

Grok 3OpenAI: o3 Mini High
Preference Elo
Grok 31,405
OpenAI: o3 Mini High—
LiveBench
Grok 360.2%
OpenAI: o3 Mini High—
SWE-bench
Grok 351.4%
OpenAI: o3 Mini High—
GPQA Diamond
Grok 374.2%
OpenAI: o3 Mini High—
Time to first token
Grok 3250 ms
OpenAI: o3 Mini High—
Output speed
Grok 388 tok/s
OpenAI: o3 Mini High—
Input priceOpenAI: o3 Mini High +$1.9/1M
Grok 3$3/1M
OpenAI: o3 Mini High$1.1/1M
Output priceOpenAI: o3 Mini High +$10.6/1M
Grok 3$15/1M
OpenAI: o3 Mini High$4.4/1M
Context windowOpenAI: o3 Mini High +69k
Grok 3131k
OpenAI: o3 Mini High200k
BenchmarkGrok 3OpenAI: o3 Mini HighAdvantage Delta
Preference Elo
1,405
lmarena · Aug 17, 2026
——
LiveBench
60.2%
livebench · Aug 17, 2026
——
SWE-bench
51.4%
swebench · Aug 17, 2026
——
GPQA Diamond
74.2%
seed-bootstrap · Aug 1, 2026
——
Time to first token
250 ms
seed-bootstrap · Aug 1, 2026
——
Output speed
88 tok/s
seed-bootstrap · Aug 1, 2026
——
Input price
$3/1M
seed-bootstrap · Aug 1, 2026
$1.1/1M
openrouter · Aug 17, 2026
+$1.9/1M
Output price
$15/1M
seed-bootstrap · Aug 1, 2026
$4.4/1M
openrouter · Aug 17, 2026
+$10.6/1M
Context window
131k
seed-bootstrap · Aug 1, 2026
200k
openrouter · Aug 17, 2026
+69k

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save 68% with OpenAI: o3 Mini High
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Grok 3$330.00 / mo
In: $105Out: $225
OpenAI: o3 Mini High$104.50 / mo
In: $38.5Out: $66
Estimated Cost Delta

OpenAI: o3 Mini High is estimated to save $225.50/month ($2,706/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    OpenAI: o3 Mini High:Pick OpenAI: o3 Mini High when you are optimizing output cost.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatOpenAI: o3 Mini High

Lower output list price ($4.4/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGOpenAI: o3 Mini High

Larger window (200k).

Screenshots / visionGrok 3

Grok 3 is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatOpenAI: o3 Mini HighLower output list price ($4.4/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGOpenAI: o3 Mini HighLarger window (200k).
Screenshots / visionGrok 3Grok 3 is the side marked multimodal in the catalog.

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
xAI

Grok 3

Elo 1,405
SWE-bench51.4%
Speed (tok/s)88 tok/s
Input / 1M Tokens$3/1M
Output / 1M Tokens$15/1M
OpenAI

OpenAI: o3 Mini High

Elo n/a
SWE-bench—
Speed (tok/s)200k
Input / 1M Tokens$1.1/1M
Output / 1M Tokens$4.4/1M

Frequently Asked Questions

Which is better overall, Grok 3 or OpenAI: o3 Mini High?
We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, Grok 3 or OpenAI: o3 Mini High?
SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?
OpenAI: o3 Mini High output tokens are $4.4/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Grok 3 or OpenAI: o3 Mini High?
We do not have TTFT for both models.
Which has the larger context window?
OpenAI: o3 Mini High accepts 200k tokens versus 131k.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Grok 3 and OpenAI: o3 Mini High Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Grok 3 matchups →|All OpenAI: o3 Mini High matchups →
Grok 3 vs Grok 4 (next grok)GPT-4.5 Orion vs Grok 3GPT-5.6 Terra vs Grok 3GPT-5 vs Grok 3Grok 4.6 vs Grok 3GPT-5.6 Sol vs Grok 3