Code Index is a live and evolving coding-benchmarks leaderboard composed of novel, contamination-free collections. It currently combines 3 private task sets from traditional benchmarks: SWE-Lancer, Terminal Bench 2.1, Terminal Bench 3.0. More task sets soon to come, including proprietary benchmarks. Not in the index for now: SWE-Bench-Pro Hard.

Code Index leaderboard

1
claude-opus-5
claude-code
1.04B 20.0M
$1.3k
48.3
2
gpt-6-astra
codex
297.0M 8.0M
$897.8
45.0
3
claude-fable-5
claude-code
581.7M 13.7M
$1.5k
42.8
4
gpt-5.6-sol
codex
293.2M 5.2M
$349.8
39.4
5
deepseek-v4.1-flash
deepseek-harness-minimal
2.42B 28.7M
$86.5
38.9
6
gemini-3.8-flash
terminus-2
1.7B 20.2M
$326.7
36.7
7
kimi-k3
terminus-2
231.0M 8.1M
$223.9
36.1
8
claude-opus-4.8
claude-code
718.4M 11.5M
$752.9
35.6
9
gpt-5.6-terra
codex
143.8M 3.4M
$87.5
30.6
10
gpt-5.6-luna
codex
283.0M 5.1M
$14.3
30.6
11
qwen3.8-max
claude-code
839.4M 14.9M
$1.5k
29.4
12
grok-4.5
terminus-2
1.52B 12.3M
$841.5
27.8
13
glm-5.2
terminus-2
605.5M 21.6M
$375.8
27.2
14
deepseek-v4-flash-0731
terminus-2
417.2M 30.7M
$24.4
26.1
15
gemini-3.6-flash
terminus-2
3.02B 12.9M
$751.2
24.4
16
deepseek-v4-pro
terminus-2
1.95B 28.6M
$318.1
17.8
17
hy3
terminus-2
642.2M 21.4M
$50.2
15.0
18
minimax-m3
terminus-2
1.86B 14.0M
$143.8
15.0
19
mimo-v2.5-pro
terminus-2
501.5M 14.2M
$100.0
6.1
20
nemotron-3-ultra-550b-a55b
terminus-2
862.3M 10.8M
$272.9
2.8

The Index is the mean pass rate of the 3 benchmarks in the index, each with equal weight. Read the methodology.

Per benchmark

Our results show that models can have different standings for different benchmarks. See the detailed results per benchmark.

SWE-Lancer n=20
claude-opus-5
45.0
gpt-6-astra
40.0
claude-fable-5
51.7
gpt-5.6-sol
43.3
deepseek-v4.1-flash
35.0
gemini-3.8-flash
51.7
kimi-k3
43.3
claude-opus-4.8
45.0
gpt-5.6-terra
40.0
gpt-5.6-luna
38.3
qwen3.8-max
28.3
grok-4.5
46.7
glm-5.2
40.0
deepseek-v4-flash-0731
35.0
gemini-3.6-flash
41.7
deepseek-v4-pro
26.7
hy3
16.7
minimax-m3
21.7
mimo-v2.5-pro
6.7
nemotron-3-ultra-550b-a55b
1.7
Terminal Bench 2.1 n=20
claude-opus-5
68.3
gpt-6-astra
65.0
claude-fable-5
51.7
gpt-5.6-sol
58.3
deepseek-v4.1-flash
65.0
gemini-3.8-flash
50.0
kimi-k3
50.0
claude-opus-4.8
48.3
gpt-5.6-terra
41.7
gpt-5.6-luna
40.0
qwen3.8-max
41.7
grok-4.5
35.0
glm-5.2
38.3
deepseek-v4-flash-0731
38.3
gemini-3.6-flash
23.3
deepseek-v4-pro
21.7
hy3
21.7
minimax-m3
20.0
mimo-v2.5-pro
8.3
nemotron-3-ultra-550b-a55b
5.0
Terminal Bench 3.0 n=20
claude-opus-5
31.7
gpt-6-astra
30.0
claude-fable-5
25.0
gpt-5.6-sol
16.7
deepseek-v4.1-flash
16.7
gemini-3.8-flash
8.3
kimi-k3
15.0
claude-opus-4.8
13.3
gpt-5.6-terra
10.0
gpt-5.6-luna
13.3
qwen3.8-max
18.3
grok-4.5
1.7
glm-5.2
3.3
deepseek-v4-flash-0731
5.0
gemini-3.6-flash
8.3
deepseek-v4-pro
5.0
hy3
6.7
minimax-m3
3.3
mimo-v2.5-pro
3.3
nemotron-3-ultra-550b-a55b
1.7

Three trials ran for each task and the mean of all 'n' tasks composes the per-benchmark index. Read the methodology.

Efficiency tradeoffs

The frontier is not only the highest-scoring models, but those that can achieve best results more efficiently. The following charts present the mean agent time and token cost for each model, and which of them compose the frontier line. Better results appear toward the upper left.

Score vs. steps

Tha number of steps needed to reach a given Index score shows which models make the most of their earlier agent steps, which may be crucial under time/cost-limited scenarios.

Accessible summary

Score versus steps summary
Model Score at ≤ ceil(P95) steps ceil(P95) steps
claude-opus-5 45.6% 116
gpt-6-astra 43.3% 47
claude-fable-5 40.6% 58
gpt-5.6-sol 37.2% 61
deepseek-v4.1-flash 37.2% 149
gemini-3.8-flash 34.4% 161
kimi-k3 33.9% 65
claude-opus-4.8 33.9% 68
gpt-5.6-terra 28.9% 40
gpt-5.6-luna 28.9% 50
qwen3.8-max 27.2% 128
grok-4.5 26.1% 42
glm-5.2 25.6% 46
deepseek-v4-flash-0731 25.0% 43
gemini-3.6-flash 22.8% 79
deepseek-v4-pro 16.7% 70
hy3 13.9% 57
minimax-m3 13.9% 112
mimo-v2.5-pro 5.6% 47
nemotron-3-ultra-550b-a55b 2.8% 27

Difficulty distribution

Difficulty was categorized according to the results of each task across all measured models. Full methodology →

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