vs
5:4
overall capability wins (2 ties across 11 scored). o1 leads overall.
- Reasoning3:3
- Coding1:1
- Arena1:0
- Pricing0:3
- Speed0:2
Verdict
o1 ranks higher on LMArena (+11 Elo); o4-mini is ~13.6x cheaper on a blended token basis than o1.
- o1 ranks higher on LMArena (+11 Elo)
- o4-mini is ~13.6x cheaper on a blended token basis than o1
Cost for 1M in + 250K out
Illustrative chat workload at primary-provider list prices.
- o1
- $30
- o4-mini
- $2.20
o4-mini is about 13.6x cheaper on this workload.
Price per 1M tokens
Full comparison
Organization
OpenAI
OpenAI
Family
GPT-4 / o-series
GPT-4 / o-series
License
Proprietary
Proprietary
Open weights
No
No
Release
Dec 5, 2024
Apr 16, 2025
Knowledge cutoff
-
-
API / provider
OpenAI
OpenAI
Modalities
text, image → text
text, image → text
Specs
Context window
200K
200K
Max output
100K
100K
Parameters
—
—
Pricing
Input $/1M
$15
$1.10
Output $/1M
$60
$4.40
Blended $/1M (3∶1)
$26.25
$1.93
Speed
tok/s
35
90
TTFT (s)
3
0.7
Reasoning
MMLU-Pro
84.1
—
GPQA Diamond
74.7
78.4
Humanity's Last Exam
7.0
16.5
AIME 2025
—
92.7
MATH-500
97.0
—
Humanity's Last Exam (with tools)
—
—
AA-Omniscience Accuracy
34.5
24.8
AA-LCR v1.1
65.0
61.0
CritPt
0.3
0.6
MMMU-Pro
—
69.2
IFBench
70.3
68.7
Chartography
—
—
Chartography (With Tools)
—
—
Coding
SWE-bench Verified
—
45.0
SWE-bench Pro
—
—
SWE-bench Multilingual
—
—
LiveCodeBench
67.9
—
Terminal-Bench 2.1
—
—
Aider Polyglot
61.7
58.2
Terminal-Bench 3
—
—
BigCodeBench
—
—
SciCode
35.8
46.5
CursorBench
—
—
SWE-Rebench
—
27.5
NL2Repo-Bench
—
—
DeepSWE
—
—
WebDev Arena
—
—
Terminal-Bench 4.0
—
—
CursorBench 4.0
—
—
FrontierCode v1.1 (Main)
—
—
Arena
LMArena Elo
1,402
1,391
| Metric | o1 | o4-mini | Delta |
|---|---|---|---|
| Identity | |||
| Organization | OpenAI | OpenAI | — |
| Family | GPT-4 / o-series | GPT-4 / o-series | — |
| License | Proprietary | Proprietary | — |
| Open weights | No | No | — |
| Release | Dec 5, 2024 | Apr 16, 2025 | — |
| Knowledge cutoff | - | - | — |
| API / provider | OpenAI | OpenAI | — |
| Modalities | text, image → text | text, image → text | — |
| Specs | |||
| Context window | 200K | 200K | tie |
| Max output | 100K | 100K | tie |
| Parameters | — | — | — |
| Pricing | |||
| Input $/1M | $15 | $1.10 | B +$13.90 |
| Output $/1M | $60 | $4.40 | B +$55.60 |
| Blended $/1M (3∶1) | $26.25 | $1.93 | B +$24.32 |
| Speed | |||
| tok/s | 35 | 90 | B +55 |
| TTFT (s) | 3 | 0.7 | B +2.30 |
| Reasoning | |||
| MMLU-Pro | 84.1 | — | — |
| GPQA Diamond | 74.7 | 78.4 | B +3.7 pts |
| Humanity's Last Exam | 7.0 | 16.5 | B +9.5 pts |
| AIME 2025 | — | 92.7 | — |
| MATH-500 | 97.0 | — | — |
| Humanity's Last Exam (with tools) | — | — | — |
| AA-Omniscience Accuracy | 34.5 | 24.8 | A +9.7 pts |
| AA-LCR v1.1 | 65.0 | 61.0 | A +4.0 pts |
| CritPt | 0.3 | 0.6 | B +0.3 pts |
| MMMU-Pro | — | 69.2 | — |
| IFBench | 70.3 | 68.7 | A +1.6 pts |
| Chartography | — | — | — |
| Chartography (With Tools) | — | — | — |
| Coding | |||
| SWE-bench Verified | — | 45.0 | — |
| SWE-bench Pro | — | — | — |
| SWE-bench Multilingual | — | — | — |
| LiveCodeBench | 67.9 | — | — |
| Terminal-Bench 2.1 | — | — | — |
| Aider Polyglot | 61.7 | 58.2 | A +3.5 pts |
| Terminal-Bench 3 | — | — | — |
| BigCodeBench | — | — | — |
| SciCode | 35.8 | 46.5 | B +10.7 pts |
| CursorBench | — | — | — |
| SWE-Rebench | — | 27.5 | — |
| NL2Repo-Bench | — | — | — |
| DeepSWE | — | — | — |
| WebDev Arena | — | — | — |
| Terminal-Bench 4.0 | — | — | — |
| CursorBench 4.0 | — | — | — |
| FrontierCode v1.1 (Main) | — | — | — |
| Arena | |||
| LMArena Elo | 1,402 | 1,391 | A +11 Elo |
o1
- Context
- 200K / 100K out
- Parameters
- —
- Price
- $15 / $60
- Speed
- 35 tok/s · 3s TTFT
- Modalities
- text, image → text
- License
- Proprietary
Original o-series reasoning model - legacy deep reasoning SKU retained for API compatibility.
o4-mini
- Context
- 200K / 100K out
- Parameters
- —
- Price
- $1.10 / $4.40
- Speed
- 90 tok/s · 0.7s TTFT
- Modalities
- text, image → text
- License
- Proprietary
Cost-efficient o-series reasoning model for STEM and coding with lower latency than o3.
Benchmark charts
Winner bars are emphasized. Per-benchmark deltas sit above each chart.