vs
0:3
overall capability wins (0 ties across 3 scored). GPT-5.6 Terra leads overall.
- Coding0:1
- Pricing3:0
- Speed0:2
- Specs0:2
Verdict
GPT-5.6 Terra leads coding (widest gap: +8.8 on CursorBench); GPT-5.6 Terra offers ~5.3x larger context (1.1M vs 200K); GPT-5.6 Terra allows ~2.0x more max output (128K vs 64K).
- GPT-5.6 Terra leads coding (widest gap: +8.8 on CursorBench)
- GPT-5.6 Terra offers ~5.3x larger context (1.1M vs 200K)
- GPT-5.6 Terra allows ~2.0x more max output (128K vs 64K)
- Composer 2.5 is ~4.5x cheaper on a blended token basis than GPT-5.6 Terra
Cost for 1M in + 250K out
Illustrative chat workload at primary-provider list prices.
- Composer 2.5
- $1.13
- GPT-5.6 Terra
- $5
Composer 2.5 is about 4.4x cheaper on this workload.
Price per 1M tokens
Full comparison
Organization
Cursor
OpenAI
Family
Composer
GPT-5.x
License
Proprietary
Proprietary
Open weights
No
No
Release
May 18, 2026
Jul 9, 2026
Knowledge cutoff
-
-
API / provider
Cursor
OpenAI
Modalities
text → text
text, image → text
Specs
Context window
200K
1.1M
Max output
64K
128K
Parameters
—
—
Pricing
Input $/1M
$0.50
$2
Output $/1M
$2.50
$12
Blended $/1M (3∶1)
$1
$4.50
Speed
tok/s
90
135
TTFT (s)
0.35
0.3
Reasoning
MMLU-Pro
—
—
GPQA Diamond
—
92.5
Humanity's Last Exam
—
42.9
AIME 2025
—
—
MATH-500
—
—
Humanity's Last Exam (with tools)
—
—
AA-Omniscience Accuracy
—
46.8
AA-LCR v1.1
—
83.0
CritPt
—
30.0
MMMU-Pro
—
80.7
IFBench
—
71.2
Chartography
—
—
Chartography (With Tools)
—
—
Coding
SWE-bench Verified
—
—
SWE-bench Pro
—
63.4
SWE-bench Multilingual
79.8
—
LiveCodeBench
—
—
Terminal-Bench 2.1
—
88.0
Aider Polyglot
—
—
Terminal-Bench 3
—
20.8
BigCodeBench
—
—
SciCode
—
55.0
CursorBench
56.1
64.9
SWE-Rebench
—
—
NL2Repo-Bench
—
—
DeepSWE
—
—
WebDev Arena
—
1,521
Terminal-Bench 4.0
—
21.5
CursorBench 4.0
—
—
FrontierCode v1.1 (Main)
—
—
Arena
LMArena Elo
—
1,466
| Metric | Composer 2.5 | GPT-5.6 Terra | Delta |
|---|---|---|---|
| Identity | |||
| Organization | Cursor | OpenAI | — |
| Family | Composer | GPT-5.x | — |
| License | Proprietary | Proprietary | — |
| Open weights | No | No | — |
| Release | May 18, 2026 | Jul 9, 2026 | — |
| Knowledge cutoff | - | - | — |
| API / provider | Cursor | OpenAI | — |
| Modalities | text → text | text, image → text | — |
| Specs | |||
| Context window | 200K | 1.1M | B +850K |
| Max output | 64K | 128K | B +64K |
| Parameters | — | — | — |
| Pricing | |||
| Input $/1M | $0.50 | $2 | A +$1.50 |
| Output $/1M | $2.50 | $12 | A +$9.50 |
| Blended $/1M (3∶1) | $1 | $4.50 | A +$3.50 |
| Speed | |||
| tok/s | 90 | 135 | B +45 |
| TTFT (s) | 0.35 | 0.3 | B +0.05 |
| Reasoning | |||
| MMLU-Pro | — | — | — |
| GPQA Diamond | — | 92.5 | — |
| Humanity's Last Exam | — | 42.9 | — |
| AIME 2025 | — | — | — |
| MATH-500 | — | — | — |
| Humanity's Last Exam (with tools) | — | — | — |
| AA-Omniscience Accuracy | — | 46.8 | — |
| AA-LCR v1.1 | — | 83.0 | — |
| CritPt | — | 30.0 | — |
| MMMU-Pro | — | 80.7 | — |
| IFBench | — | 71.2 | — |
| Chartography | — | — | — |
| Chartography (With Tools) | — | — | — |
| Coding | |||
| SWE-bench Verified | — | — | — |
| SWE-bench Pro | — | 63.4 | — |
| SWE-bench Multilingual | 79.8 | — | — |
| LiveCodeBench | — | — | — |
| Terminal-Bench 2.1 | — | 88.0 | — |
| Aider Polyglot | — | — | — |
| Terminal-Bench 3 | — | 20.8 | — |
| BigCodeBench | — | — | — |
| SciCode | — | 55.0 | — |
| CursorBench | 56.1 | 64.9 | B +8.8 pts |
| SWE-Rebench | — | — | — |
| NL2Repo-Bench | — | — | — |
| DeepSWE | — | — | — |
| WebDev Arena | — | 1,521 | — |
| Terminal-Bench 4.0 | — | 21.5 | — |
| CursorBench 4.0 | — | — | — |
| FrontierCode v1.1 (Main) | — | — | — |
| Arena | |||
| LMArena Elo | — | 1,466 | — |
Composer 2.5
- Context
- 200K / 64K out
- Parameters
- —
- Price
- $0.50 / $2.50
- Speed
- 90 tok/s · 0.35s TTFT
- Modalities
- text → text
- License
- Proprietary
Cursor's own agentic coding model (standard tier) — Cursor reports 69.3% Terminal-Bench 2.0 and 79.8% SWE-bench Multilingual; draws from the Cursor Models usage pool at $0.50/$2.50.
GPT-5.6 Terra
- Context
- 1.1M / 128K out
- Parameters
- —
- Price
- $2 / $12
- Speed
- 135 tok/s · 0.3s TTFT
- Modalities
- text, image → text
- License
- Proprietary
Balanced GPT-5.6 mid-tier for everyday work; July 30, 2026 API cut brought Standard rates to $2/$12 (20% lower), with strong throughput for the price.
Benchmark charts
Winner bars are emphasized. Per-benchmark deltas sit above each chart.