Compare · ModelsLive · 4 picked · head to head
Claude Mythos Preview vs GPT-5 Chat vs Gemini 3.1 Pro Preview vs Qwen3.5 397B A17B
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Gemini 3.1 Pro Preview wins on 5/8 benchmarks
Gemini 3.1 Pro Preview wins 5 of 8 shared benchmarks. Leads in arena · speed.
Category leads
arena·Gemini 3.1 Pro Previewspeed·Gemini 3.1 Pro Previewknowledge·Claude Mythos Previewcoding·Claude Mythos Preview
Hype vs Reality
Attention vs performance
Claude Mythos Preview
#2 by perf·#2 by attention
GPT-5 Chat
#1 by perf·#1 by attention
Gemini 3.1 Pro Preview
#36 by perf·no signal
Qwen3.5 397B A17B
#3 by perf·no signal
Best value
Qwen3.5 397B A17B
3.9x better value than GPT-5 Chat
Claude Mythos Preview
—
no price
GPT-5 Chat
14.6 pts/$
$5.63/M
Gemini 3.1 Pro Preview
8.7 pts/$
$7.00/M
Qwen3.5 397B A17B
57.4 pts/$
$1.36/M
Vendor risk
Who is behind the model
Anthropic
$380.0B·Tier 1
OpenAI
$840.0B·Tier 1
Google DeepMind
$4.00T·Tier 1
Alibaba (Qwen)
$293.0B·Tier 1
Head to head
8 benchmarks · 4 models
Claude Mythos PreviewGPT-5 ChatGemini 3.1 Pro PreviewQwen3.5 397B A17B
Chatbot Arena Elo · Overall
Gemini 3.1 Pro Preview leads by +44.9
GPT-5 Chat
1426.0
Gemini 3.1 Pro Preview
1492.6
Qwen3.5 397B A17B
1447.7
Artificial Analysis · Agentic Index
Gemini 3.1 Pro Preview leads by +3.3
Gemini 3.1 Pro Preview
59.1
Qwen3.5 397B A17B
55.8
Artificial Analysis · Coding Index
Gemini 3.1 Pro Preview leads by +14.2
Gemini 3.1 Pro Preview
55.5
Qwen3.5 397B A17B
41.3
Artificial Analysis · Quality Index
Gemini 3.1 Pro Preview leads by +12.1
Gemini 3.1 Pro Preview
57.2
Qwen3.5 397B A17B
45.0
Chatbot Arena Elo · Coding
Gemini 3.1 Pro Preview leads by +69.7
Gemini 3.1 Pro Preview
1455.7
Qwen3.5 397B A17B
1386.1
GPQA diamond
Claude Mythos Preview leads by +2.4
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Mythos Preview
94.5
Gemini 3.1 Pro Preview
92.1
SWE-Bench verified
Claude Mythos Preview leads by +18.3
Claude Mythos Preview
93.9
Gemini 3.1 Pro Preview
75.6
Terminal Bench
Claude Mythos Preview leads by +3.6
Terminal Bench · tests the ability to accomplish real-world tasks using terminal commands, evaluating shell scripting and CLI tool proficiency.
Claude Mythos Preview
82.0
Gemini 3.1 Pro Preview
78.4
Full benchmark table
| Benchmark | Claude Mythos Preview | GPT-5 Chat | Gemini 3.1 Pro Preview | Qwen3.5 397B A17B |
|---|---|---|---|---|
Chatbot Arena Elo · Overall | — | 1426.0 | 1492.6 | 1447.7 |
Artificial Analysis · Agentic Index | — | — | 59.1 | 55.8 |
Artificial Analysis · Coding Index | — | — | 55.5 | 41.3 |
Artificial Analysis · Quality Index | — | — | 57.2 | 45.0 |
Chatbot Arena Elo · Coding | — | — | 1455.7 | 1386.1 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 94.5 | — | 92.1 | — |
SWE-Bench verified | 93.9 | — | 75.6 | — |
Terminal Bench Terminal Bench · tests the ability to accomplish real-world tasks using terminal commands, evaluating shell scripting and CLI tool proficiency. | 82.0 | — | 78.4 | — |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| Claude Mythos Preview | — | — | 1.0M tokens (~500 books) | — |
| GPT-5 Chat | $1.25 | $10.00 | 128K tokens (~64 books) | $34.38 |
| Gemini 3.1 Pro Preview | $2.00 | $12.00 | 1.0M tokens (~524 books) | $45.00 |
| Qwen3.5 397B A17B | $0.39 | $2.34 | 262K tokens (~131 books) | $8.78 |
People also compared