Compare · ModelsLive · 2 picked · head to head
Qwen2.5 7B Instruct vs Qwen3.5-Flash
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Qwen3.5-Flash wins on 5/5 benchmarks
Qwen3.5-Flash wins 5 of 5 shared benchmarks. Leads in knowledge · general · math.
Category leads
knowledge·Qwen3.5-Flashgeneral·Qwen3.5-Flashmath·Qwen3.5-Flash
Hype vs Reality
Attention vs performance
Qwen2.5 7B Instruct
#287 by perf·#1 by attention
Qwen3.5-Flash
#245 by perf·#1 by attention
Best value
Qwen3.5-Flash
1.3x better value than Qwen2.5 7B Instruct
Qwen2.5 7B Instruct
164.0 pts/$
$0.15/M
Qwen3.5-Flash
207.4 pts/$
$0.16/M
Vendor risk
Who is behind the model
Alibaba (Qwen)
$293.0B·Tier 1
Alibaba (Qwen)
$293.0B·Tier 1
Head to head
5 benchmarks · 2 models
Qwen2.5 7B InstructQwen3.5-Flash
Chess Puzzles
Qwen3.5-Flash leads by +9.5
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
Qwen2.5 7B Instruct
0.0
Qwen3.5-Flash
9.5
Dtbench
Qwen3.5-Flash leads by +58.7
Qwen2.5 7B Instruct
12.9
Qwen3.5-Flash
71.5
GPQA diamond
Qwen3.5-Flash leads by +65.1
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Qwen2.5 7B Instruct
14.6
Qwen3.5-Flash
79.6
Lmca
Qwen3.5-Flash leads by +26.7
Qwen2.5 7B Instruct
7.5
Qwen3.5-Flash
34.3
OTIS Mock AIME 2024-2025
Qwen3.5-Flash leads by +82.0
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Qwen2.5 7B Instruct
2.4
Qwen3.5-Flash
84.4
Full benchmark table
| Benchmark | Qwen2.5 7B Instruct | Qwen3.5-Flash |
|---|---|---|
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 0.0 | 9.5 |
Dtbench | 12.9 | 71.5 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 14.6 | 79.6 |
Lmca | 7.5 | 34.3 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 2.4 | 84.4 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.10 | $0.20 | 33K tokens (~16 books) | $1.25 | |
| $0.07 | $0.26 | 1.0M tokens (~500 books) | $1.14 |