vs
6:1
overall capability wins (1 ties across 8 scored). Claude Opus 5 leads overall.
- Reasoning1:1
- Coding3:0
- Arena1:0
- Composite indices2:0
- Pricing0:3
- Speed0:2
- Specs1:0
Verdict
Claude Opus 5 leads coding (widest gap: +240.0 on WebDev Elo); Claude Opus 5 ranks higher on LMArena (+6 Elo); Claude Opus 5 allows ~2.0x more max output (128K vs 66K).
- Claude Opus 5 leads coding (widest gap: +240.0 on WebDev Elo)
- Claude Opus 5 ranks higher on LMArena (+6 Elo)
- Claude Opus 5 allows ~2.0x more max output (128K vs 66K)
- Gemini 3.1 Pro is ~2.2x cheaper on a blended token basis than Claude Opus 5
Cost for 1M in + 250K out
Illustrative chat workload at primary-provider list prices.
- Claude Opus 5
- $11.25
- Gemini 3.1 Pro
- $5
Gemini 3.1 Pro is about 2.3x cheaper on this workload.
Price per 1M tokens
Full comparison
Organization
Anthropic
Family
Claude Opus
Gemini
License
Proprietary
Proprietary
Open weights
No
No
Release
Jul 24, 2026
Feb 19, 2026
Knowledge cutoff
-
-
API / provider
Anthropic
Modalities
text, image → text
text, image, audio, video → text
Specs
Context window
1M
1M
Max output
128K
66K
Parameters
—
—
Pricing
Input $/1M
$5
$2
Output $/1M
$25
$12
Blended $/1M (3∶1)
$10
$4.50
Speed
tok/s
72
128
TTFT (s)
0.55
0.4
Reasoning
MMLU-Pro
—
—
GPQA Diamond
93.2
94.3
Humanity's Last Exam
54.9
44.4
AIME 2025
—
—
MATH-500
—
—
Humanity's Last Exam (with tools)
—
—
AA-Omniscience Accuracy
60.9
—
AA-LCR v1.1
79.3
—
CritPt
29.1
—
MMMU-Pro
84.7
—
IFBench
—
—
Chartography
—
—
Chartography (With Tools)
—
—
Coding
SWE-bench Verified
—
80.6
SWE-bench Pro
—
54.2
SWE-bench Multilingual
—
—
LiveCodeBench
—
—
Terminal-Bench 2.1
89.1
70.7
Aider Polyglot
—
—
Terminal-Bench 3
42.7
—
BigCodeBench
—
—
SciCode
56.4
—
CursorBench
70.0
—
SWE-Rebench
63.4
54.9
NL2Repo-Bench
—
—
DeepSWE
73.7
—
WebDev Arena
1,687
1,447
Terminal-Bench 4.0
51.8
—
CursorBench 4.0
—
—
FrontierCode v1.1 (Main)
—
—
Arena
LMArena Elo
1,493
1,487
| Metric | Claude Opus 5 | Gemini 3.1 Pro | Delta |
|---|---|---|---|
| Identity | |||
| Organization | Anthropic | — | |
| Family | Claude Opus | Gemini | — |
| License | Proprietary | Proprietary | — |
| Open weights | No | No | — |
| Release | Jul 24, 2026 | Feb 19, 2026 | — |
| Knowledge cutoff | - | - | — |
| API / provider | Anthropic | — | |
| Modalities | text, image → text | text, image, audio, video → text | — |
| Specs | |||
| Context window | 1M | 1M | tie |
| Max output | 128K | 66K | A +62K |
| Parameters | — | — | — |
| Pricing | |||
| Input $/1M | $5 | $2 | B +$3 |
| Output $/1M | $25 | $12 | B +$13 |
| Blended $/1M (3∶1) | $10 | $4.50 | B +$5.50 |
| Speed | |||
| tok/s | 72 | 128 | B +56 |
| TTFT (s) | 0.55 | 0.4 | B +0.15 |
| Reasoning | |||
| MMLU-Pro | — | — | — |
| GPQA Diamond | 93.2 | 94.3 | B +1.1 pts |
| Humanity's Last Exam | 54.9 | 44.4 | A +10.5 pts |
| AIME 2025 | — | — | — |
| MATH-500 | — | — | — |
| Humanity's Last Exam (with tools) | — | — | — |
| AA-Omniscience Accuracy | 60.9 | — | — |
| AA-LCR v1.1 | 79.3 | — | — |
| CritPt | 29.1 | — | — |
| MMMU-Pro | 84.7 | — | — |
| IFBench | — | — | — |
| Chartography | — | — | — |
| Chartography (With Tools) | — | — | — |
| Coding | |||
| SWE-bench Verified | — | 80.6 | — |
| SWE-bench Pro | — | 54.2 | — |
| SWE-bench Multilingual | — | — | — |
| LiveCodeBench | — | — | — |
| Terminal-Bench 2.1 | 89.1 | 70.7 | A +18.4 pts |
| Aider Polyglot | — | — | — |
| Terminal-Bench 3 | 42.7 | — | — |
| BigCodeBench | — | — | — |
| SciCode | 56.4 | — | — |
| CursorBench | 70.0 | — | — |
| SWE-Rebench | 63.4 | 54.9 | A +8.5 pts |
| NL2Repo-Bench | — | — | — |
| DeepSWE | 73.7 | — | — |
| WebDev Arena | 1,687 | 1,447 | A +240 Elo |
| Terminal-Bench 4.0 | 51.8 | — | — |
| CursorBench 4.0 | — | — | — |
| FrontierCode v1.1 (Main) | — | — | — |
| Arena | |||
| LMArena Elo | 1,493 | 1,487 | A +6 Elo |
Claude Opus 5
- Context
- 1M / 128K out
- Parameters
- —
- Price
- $5 / $25
- Speed
- 72 tok/s · 0.55s TTFT
- Modalities
- text, image → text
- License
- Proprietary
Anthropic's July 2026 flagship - top Artificial Analysis Intelligence Index and strong agentic coding at Opus 4.8 pricing.
Gemini 3.1 Pro
- Context
- 1M / 66K out
- Parameters
- —
- Price
- $2 / $12
- Speed
- 128 tok/s · 0.4s TTFT
- Modalities
- text, image, audio, video → text
- License
- Proprietary
Google's current Pro flagship with native multimodality and standout GPQA / ARC-AGI accuracy.
Benchmark charts
Winner bars are emphasized. Per-benchmark deltas sit above each chart.