Pairwise benchmark snapshot · Aug 1, 2026

GPT-4.5 Orion vs Grok 4 benchmark

Name: GPT-4.5 Orion vs Grok 4 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares GPT-4.5 Orion (OpenAI) and Grok 4 (xAI) using the latest snapshots we have as of Aug 1, 2026. On preference Elo, GPT-4.5 Orion is ahead by 52 points (1,540 vs 1,488; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, GPT-4.5 Orion resolves 71% versus 58.6% (seed-bootstrap (Aug 1, 2026)). Grok 4 streams faster (98 tok/s) while Grok 4 is the cheaper output token ($15/1M). Grok 4 has the larger context window (256k tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

Share Analysis:

WhatsApp Telegram X / Post LinkedIn Reddit

OpenAI

GPT-4.5 Orion

OpenAI largest dense non-reasoning model with expansive world knowledge and reduced hallucinations.

Elo 1,540$150/1M out

xAI

Grok 4

Previous xAI flagship.

Elo 1,488$15/1M out

Swap or Add Any Model to this Matchup

Instant pairwise benchmark recalculation across 400+ LLMs

Model A

Model B

Quick vs:vs Claude Opus 4.5 vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

GPT-4.5 Orion (5)vsGrok 4 (5)

GPT-4.5 Orion: 5W (50%)Overall: Even matchupGrok 4: 5W (50%)

← GPT-4.5 OrionGrok 4 →

GPT-4.5 Orion (5/5)

Intelligence & Reasoning

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

Preference Elo

1,540vs1,488

Coding Elo

1,520vs—

SWE-bench

71%vs58.6%

LiveBench

68.5%vs64.1%

GPQA Diamond

84%vs79%

GPT-4.5 Orion: 5WGrok 4: 0W

Grok 4 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

60 tok/svs98 tok/s

Time to first token

350 msvs230 ms

GPT-4.5 Orion: 0WGrok 4: 2W

Grok 4 (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$150/1Mvs$15/1M

Input price

$75/1Mvs$3/1M

Context window

128kvs256k

GPT-4.5 Orion: 0WGrok 4: 3W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageEven 3–3

Preference Elo

GPT-4.5 Orion

52 pts advantage

Throughput Speed

Grok 4

38 tok/s faster

Price Efficiency

Grok 4

$135.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

+3%1,540

EloHigh is better

1,488

Code Elo

High is better

1,520

Code EloHigh is better

—

LiveBench

High is better

+7%68.5%

LiveBenchHigh is better

64.1%

SWE-bench

High is better

+21%71%

SWE-benchHigh is better

58.6%

GPQA

High is better

+6%84%

GPQAHigh is better

79%

TTFT

Low is better

350 ms

TTFTLow is better

230 ms+52%

Speed

High is better

60 tok/s

SpeedHigh is better

98 tok/s+63%

In $

Low is better

$75/1M

In $Low is better

$3/1M+2400%

Out $

Low is better

$150/1M

Out $Low is better

$15/1M+900%

Context

High is better

128k

ContextHigh is better

256k+100%

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 93% with Grok 4

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

GPT-4.5 Orion$4,875.00 / mo

In: $2625.00Out: $2250.00

Grok 4$330.00 / mo

In: $105.00Out: $225.00

Estimated Cost Delta

Grok 4 is estimated to save $4,545.00/month ($54,540/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
GPT-4.5 Orion:Pick GPT-4.5 Orion when repo-level coding accuracy is the constraint.
2
Grok 4:Pick Grok 4 when you are optimizing output cost.
3
Grok 4:Pick Grok 4 when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsGPT-4.5 Orion

Higher SWE-bench (71%).

High-volume chatGrok 4

Lower output list price ($15/1M).

Voice / low-latency UIGrok 4

Lower TTFT (230 ms).

Long-document RAGGrok 4

Larger window (256k).

Screenshots / visionGPT-4.5 Orion

Both accept images. Defaulting to the higher-Elo side (GPT-4.5 Orion).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	GPT-4.5 Orion	Higher SWE-bench (71%).
High-volume chat	Grok 4	Lower output list price ($15/1M).
Voice / low-latency UI	Grok 4	Lower TTFT (230 ms).
Long-document RAG	Grok 4	Larger window (256k).
Screenshots / vision	GPT-4.5 Orion	Both accept images. Defaulting to the higher-Elo side (GPT-4.5 Orion).

Related Editorial Dispatches & Benchmark Notes

View all news

launchJul 10, 2025

Grok 4 remains the previous xAI flagship on this catalog

2025-07 row. 4.6 is the buy. We keep 4 so upgrade pairs and old inbound links resolve.

Community Sentiment

Cast Your Matchup Vote

0 total votes

Community Discussions (0)

No comments posted on this matchup yet. Be the first to share an evaluation note!

Share card

The real PNG is generated at /compare/gpt-4-5-vs-grok-4/opengraph-image for crawlers.

PNG

CompareLLM Matrix

Verified head-to-head card

LIVE

OpenAI

GPT-4.5 Orion

Elo 1,540

LiveBench68.5%

SWE-bench71%

Speed60 tok/s

Output cost$150/1M

xAI

Grok 4

Elo 1,488

LiveBench64.1%

SWE-bench58.6%

Speed98 tok/s

Output cost$15/1M

Frequently Asked Questions

Which is better overall, GPT-4.5 Orion or Grok 4?: GPT-4.5 Orion has the higher preference Elo in our latest snapshot (1,540). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, GPT-4.5 Orion or Grok 4?: GPT-4.5 Orion leads SWE-bench at 71% vs 58.6%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: Grok 4 output tokens are $15/1M versus $150/1M. Input prices and retry rates still move the real bill.
Which is faster, GPT-4.5 Orion or Grok 4?: Grok 4 has the lower time-to-first-token (230 ms vs 350 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: Grok 4 accepts 256k tokens versus 128k.
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. GPT-4.5 Orion and Grok 4 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All GPT-4.5 Orion matchups →|All Grok 4 matchups →

GPT-4.5 Orion vs OpenAI: o1 (previous gpt-flagship)GPT-4.5 Orion vs GPT-5 (next gpt-flagship)Grok 4 vs Grok 3 (previous grok)Grok 4 vs Grok 4.6 (next grok)GPT-5.6 Terra vs GPT-4.5 Orion Grok 4.6 vs GPT-4.5 Orion

GPT-4.5 Orion vs Grok 4 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

GPT-4.5 Orion (5)vsGrok 4 (5)

GPT-4.5 Orion: 5W (50%)Overall: Even matchupGrok 4: 5W (50%)

← GPT-4.5 OrionGrok 4 →

GPT-4.5 Orion (5/5)

Intelligence & Reasoning

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

Preference Elo

1,540vs1,488

Coding Elo

1,520vs—

SWE-bench

71%vs58.6%

LiveBench

68.5%vs64.1%

GPQA Diamond

84%vs79%

GPT-4.5 Orion: 5WGrok 4: 0W

Grok 4 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

60 tok/svs98 tok/s

Time to first token

350 msvs230 ms

GPT-4.5 Orion: 0WGrok 4: 2W

Grok 4 (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$150/1Mvs$15/1M

Input price

$75/1Mvs$3/1M

Context window

128kvs256k

GPT-4.5 Orion: 0WGrok 4: 3W

Recommended Workload Routing

Repo / coding agentsGPT-4.5 Orion

Higher SWE-bench (71%).

High-volume chatGrok 4

Lower output list price ($15/1M).

Voice / low-latency UIGrok 4

Lower TTFT (230 ms).

Long-document RAGGrok 4

Larger window (256k).

Screenshots / visionGPT-4.5 Orion

Both accept images. Defaulting to the higher-Elo side (GPT-4.5 Orion).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	GPT-4.5 Orion	Higher SWE-bench (71%).
High-volume chat	Grok 4	Lower output list price ($15/1M).
Voice / low-latency UI	Grok 4	Lower TTFT (230 ms).
Long-document RAG	Grok 4	Larger window (256k).
Screenshots / vision	GPT-4.5 Orion	Both accept images. Defaulting to the higher-Elo side (GPT-4.5 Orion).

Frequently Asked Questions

Which is better overall, GPT-4.5 Orion or Grok 4?

GPT-4.5 Orion has the higher preference Elo in our latest snapshot (1,540). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, GPT-4.5 Orion or Grok 4?

GPT-4.5 Orion leads SWE-bench at 71% vs 58.6%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

Grok 4 output tokens are $15/1M versus $150/1M. Input prices and retry rates still move the real bill.

Which is faster, GPT-4.5 Orion or Grok 4?

Grok 4 has the lower time-to-first-token (230 ms vs 350 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

Grok 4 accepts 256k tokens versus 128k.

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. GPT-4.5 Orion and Grok 4 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

GPT-4.5 Orion

Grok 4

Grok 4

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Grok 4 remains the previous xAI flagship on this catalog

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

GPT-4.5 Orion

Grok 4

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

GPT-4.5 Orion

Grok 4

Grok 4

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Grok 4 remains the previous xAI flagship on this catalog

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

GPT-4.5 Orion

Grok 4

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons