Cortex Lab

LLM performance leaderboard

Price, output speed and quality across every major model, compared side by side. This is the table we open before deciding what a workflow should run on. The data is published by Artificial Analysis — we host it here for convenience and credit it in full.

120 models
Quality index Cost $/1M tokens Speed Benchmarks
# Model
1 Claude Opus 5.5 (Max, Default Fallback) Anthropic Sep 2026 57.6 — — $8.00 $4.00 $20.00 96 599.55 599.55 — 61.4% 66.9% 84.7% — — — — — — — —
2 Claude Sonnet 5.5 (Max, Default Fallback) Anthropic Sep 2026 56.0 — — $4.00 $2.00 $10.00 142 347.13 347.13 — 55.0% 61.0% 82.7% — — — — — — — —
3 Claude Opus 5.5 (Xhigh, Default Fallback) Anthropic Sep 2026 56.0 — — $8.00 $4.00 $20.00 84 80.89 80.89 — 57.5% 65.0% 84.7% — — — — — — — —
4 Muse Wonder Full (Max) Meta Oct 2026 55.8 — — — — — — — — — 53.6% 62.6% 83.7% — — — — — — — —
5 Claude Opus 5.5 (High, Default Fallback) Anthropic Sep 2026 53.6 — — $8.00 $4.00 $20.00 77 23.60 23.60 — 55.6% 60.4% 82.7% — — — — — — — —
6 Claude Fable 5.1 (Max, Default Fallback) Anthropic Sep 2026 53.4 81.6 — $20.00 $10.00 $50.00 74 163.14 163.14 93.7% 59.1% 63.1% 85.3% — — — — — — 91.4% 47.2%
7 Claude Fable 5.1 (Xhigh, Default Fallback) Anthropic Sep 2026 53.2 80.7 — $20.00 $10.00 $50.00 60 45.98 45.98 93.4% 58.7% 60.9% 83.0% — — — — — — 91.0% 45.8%
8 GPT-6 Astra (Max) OpenAI Sep 2026 52.7 76.9 — $20.00 $10.00 $50.00 71 197.86 197.86 96.1% 54.7% 56.5% 80.7% — — — — — — 88.4% 41.4%
9 Gemini 4 Argon (High) Google Sep 2026 52.6 — — $4.00 $2.00 $10.00 — — — — 57.1% 61.8% 79.7% — — — — — — — —
10 Muse Wonder (Max) Meta Oct 2026 52.4 — — $8.00 $4.00 $20.00 159 34.65 47.23 — 50.1% 60.3% 80.7% — — — — — — — —
11 GPT-6 Astra (Xhigh) OpenAI Sep 2026 52.4 75.9 — $20.00 $10.00 $50.00 65 103.73 103.73 96.3% 54.6% 55.7% 80.0% — — — — — — 89.1% 43.1%
12 Claude Sonnet 5.5 (Xhigh, Default Fallback) Anthropic Sep 2026 51.9 — — $4.00 $2.00 $10.00 106 20.36 20.36 — 50.0% 57.3% 79.7% — — — — — — — —
13 GPT-6.1 Sol (Max) OpenAI Sep 2026 51.8 — — $4.00 $2.00 $10.00 56 214.29 214.29 — 52.9% 54.2% 83.0% — — — — — — — —
14 Claude Opus 5.5 (Medium, Default Fallback) Anthropic Sep 2026 51.2 — — $8.00 $4.00 $20.00 78 12.84 12.84 — 54.7% 59.3% 84.3% — — — — — — — —
15 Claude Fable 5.1 (High, Default Fallback) Anthropic Sep 2026 51.2 79.1 — $20.00 $10.00 $50.00 55 11.11 11.11 90.6% 55.9% 58.7% 83.7% — — — — — — 89.9% 43.1%
16 GPT-6.1 Sol (Xhigh) OpenAI Sep 2026 51.0 — — $4.00 $2.00 $10.00 55 112.69 112.69 — 52.6% 55.7% 79.7% — — — — — — — —
17 GPT-6 Astra (High) OpenAI Sep 2026 50.9 77.1 — $20.00 $10.00 $50.00 59 39.51 39.51 94.9% 53.1% 55.4% 80.0% — — — — — — 89.9% 40.0%
18 Claude Opus 5 (Max) Anthropic Jul 2026 50.8 78.0 — $10.00 $5.00 $25.00 — — — 93.2% 54.9% 56.4% 79.3% — — — — — — 89.1% 42.1%
19 GPT-6.1 Sol (High) OpenAI Sep 2026 50.2 — — $4.00 $2.00 $10.00 51 34.90 34.90 — 51.4% 55.8% 82.3% — — — — — — — —
20 Claude Opus 5 (Xhigh) Anthropic Jul 2026 49.7 77.0 — $10.00 $5.00 $25.00 — — — 93.7% 54.4% 55.7% 80.3% — — — — — — 88.0% 43.3%
21 Claude Fable 5 (Max, Opus 4.8 Fallback) Anthropic Jun 2026 49.6 76.5 — $20.00 $10.00 $50.00 — — — 92.6% 55.5% 61.0% 82.3% 63.5% 98.5% 62.9% — — — 84.6% 38.1%
22 GPT-6 Astra (Medium) OpenAI Sep 2026 49.6 76.7 — $20.00 $10.00 $50.00 58 6.37 6.37 93.9% 52.7% 54.2% 79.7% — — — — — — 89.5% 35.5%
23 Claude Fable 5.1 (Medium, Default Fallback) Anthropic Sep 2026 48.9 77.1 — $20.00 $10.00 $50.00 55 5.50 5.50 88.6% 53.8% 56.4% 84.7% — — — — — — 88.0% 41.0%
24 Claude Opus 5 (High) Anthropic Jul 2026 48.1 76.5 — $10.00 $5.00 $25.00 — — — 93.7% 52.8% 55.4% 79.0% — — — — — — 87.6% 44.7%
25 Muse Spark 1.3 (Max) Meta Sep 2026 48.1 75.8 — $2.00 $1.25 $4.25 123 38.24 54.49 93.5% 48.7% 58.8% 83.0% — — — — — — 84.3% 50.5%
26 GPT-6.1 Sol (Medium) OpenAI Sep 2026 47.8 — — $4.00 $2.00 $10.00 52 5.36 5.36 — 49.9% 53.2% 83.3% — — — — — — — —
27 GPT-6 Sol (Max) OpenAI Sep 2026 47.6 — — $4.00 $2.00 $10.00 — — — — 47.9% 57.6% 83.7% — — — — — — — —
28 GPT-5.6 Sol (Max) OpenAI Jul 2026 47.0 77.4 — $8.00 $4.00 $20.00 — — — 94.1% 49.5% 57.1% 84.0% 72.7% 85.1% 65.9% — — — 88.0% 44.3%
29 Claude Fable 5.1 (Low, Default Fallback) Anthropic Sep 2026 46.8 75.2 — $20.00 $10.00 $50.00 54 0.95 0.95 88.1% 48.9% 56.7% 82.3% — — — — — — 85.0% 39.0%
30 Claude Sonnet 5.5 (High, Default Fallback) Anthropic Sep 2026 46.8 — — $4.00 $2.00 $10.00 104 9.79 9.79 — 45.8% 53.7% 78.0% — — — — — — — —

Independent benchmarks & pricing of LLMs — we publish them here, we don’t produce them. For further analysis and methodology, see artificialanalysis.ai. Updated 19 Oct 2026.

How to read it

Three things that trip people up when they first use this table.

Price is per million tokens

Input and output are priced separately, and output is usually the expensive half. A workflow that reads a lot and writes a little costs far less than the headline number suggests.

Two different kinds of speed

Time to first token is what a person waiting on a chat reply feels. Tokens per second is what matters for a batch job running overnight. Optimising for the wrong one wastes money.

Quality scores are a shortlist, not a verdict

Aggregate indices are a good way to narrow twenty models to three. They are a poor way to choose between those three — for that, test them on your actual task.

Building a workflow? We pick the model for you

We cost and benchmark every automation before it ships — so it runs on the cheapest model that actually holds up on your task.