The Known Good Updated 29 Jul 2026
claude-opus-4-1-20250805 vs OpenAI: GPT-4.1 ·Anthropic vs OpenAI

claude-opus-4-1-20250805 vs OpenAI: GPT-4.1 — head-to-head comparison

claude-opus-4-1-20250805 profile OpenAI: GPT-4.1 profile All comparisons
claude-opus-4-1-20250805 — Anthropic
Quality
#45 of 62
49based on 5 of 7 evaluations
Known Good Index
Speed
unranked
—
Output tokens per second
Price
unranked
—
Blended per 1M tokens
Cache hit price
unranked
—
per 1M tokens
Context
unranked
—
tokens
OpenAI: GPT-4.1 — OpenAI
Quality
#48 of 62
46based on 5 of 7 evaluations
Known Good Index
Speed
#186 of 317
43.5
Output tokens per second
Price
#293 of 370
$3.50
Blended per 1M tokens
In $2.00 · Out $8.00
Cache hit price
#208 of 238
$0.50
per 1M tokens (−75%)
Context
#62 of 375
1.05M
tokens (~1,600 pages)
Summary

On the Known Good Index, claude-opus-4-1-20250805 scores 49 and OpenAI: GPT-4.1 scores 46 — a 4-point lead for claude-opus-4-1-20250805. They share 4 published evaluations, with claude-opus-4-1-20250805 ahead on 4 and OpenAI: GPT-4.1 ahead on 0.

Published pricing is tracked for OpenAI: GPT-4.1 only, at $3.50 per 1M tokens blended.

claude-opus-4-1-20250805 is proprietary; OpenAI: GPT-4.1 is proprietary. 2 tracked hosts serve one or both.

Generated from tracked data on 29 Jul 2026 · how these comparisons are computed →

At a glance
Metricclaude-opus-4-1-20250805OpenAI: GPT-4.1
Known Good Index 49 based on 5 of 7 evaluations 46 based on 5 of 7 evaluations
Blended $/1M — $3.50
Output tok/s — 44
Context window — 1.05M
Providers 0 2
Jump to section

Quality

Known Good Index and the capability indices, side by side

Index scores

Each index is min-max normalised across tracked models and scaled 0–100 from published evaluations. We do not run these evaluations.

Metricclaude-opus-4-1-20250805OpenAI: GPT-4.1
Known Good Index 49 46
Coding Index 60 —
Mathematics Index 40 61
Reasoning Index 43 36
Agentic Index 60 33
Openness Index 5 5
The Known Good

Quality Breakdown

Every evaluation both models report a published score for

Evaluations both models report

Bar = claude-opus-4-1-20250805 · marker = OpenAI: GPT-4.1 · scores ingested from Epoch AI (CC-BY 4.0)

GPQA Diamond73 / 67
Mock AIME 2024–2540 / 38
SWE-bench Verified73 / 49
Humanity's Last Exam8 / 5

Right-hand figures read claude-opus-4-1-20250805 / OpenAI: GPT-4.1. claude-opus-4-1-20250805 leads on 4 of 4, OpenAI: GPT-4.1 on 0.

The Known Good

Arena Elo

Human preference rating from blind pairwise votes

Arena ratings

Elo from blind pairwise votes, ingested from Arena. Higher is better.

Metricclaude-opus-4-1-20250805OpenAI: GPT-4.1
Text Arena 1,417 —
Text Arena (style controlled) 1,447 —
The Known Good

Price & Cost

Published API pricing by token type

Published pricing

USD per 1M tokens. Blended is a 3:1 input:output mix. Live from OpenRouter, cross-checked against models.dev. Lower is better.

Metricclaude-opus-4-1-20250805OpenAI: GPT-4.1
Input $/1M — $2.00
Output $/1M — $8.00
Blended $/1M — $3.50
Cache read $/1M — $0.500
The Known Good
We publish blended price rather than cost-per-task. Cost-per-task requires token counts from an evaluation suite we do not run. Blended price is computed from published rates and is fully reproducible — see the pricing methodology.

Context Window

Maximum input accepted and maximum output emitted

Context and output limits

Provider-declared limits, from metadata via models.dev and OpenRouter. Higher is better.

Metricclaude-opus-4-1-20250805OpenAI: GPT-4.1
Context window — 1.05M
Max output tokens — 33k
The Known Good

Speed & Latency

Median throughput and time to first token across hosting providers

Output speedTime to first token
Throughput and latency

Medians across all tracked providers, derived from OpenRouter endpoint telemetry.

Metricclaude-opus-4-1-20250805OpenAI: GPT-4.1
Output tokens/s — 44
Time to first token — 0.8s
The Known Good

Providers

Which hosts serve each model, and at what price and speed

2 hosts
Full provider benchmarks →
Provider claude-opus-4-1-20250805 blendedclaude-opus-4-1-20250805 tok/s OpenAI: GPT-4.1 blendedOpenAI: GPT-4.1 tok/s
OpenAI · first party — — $3.50 57
Azure · first party — — $3.50 50

Per-host pricing and telemetry from OpenRouter. A dash means that host does not serve that model.

The Known Good
Sources for this page
Pricing & providers — OpenRouter Metadata — models.dev Benchmarks — Epoch AI (CC-BY 4.0)Elo — Arena Full attribution →