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Claude Opus 5.5 vs Qwen3.6 35B A3B

Claude Opus 5.5 has the stronger public benchmark scores. Qwen3.6 35B A3B costs 96% less for the same work.

Claude Opus 5.5

by Anthropic · #1 of 67 overall

Coming soon · price at launch
Context
1M
Input / 1M
$4.00
Output / 1M
$20.00

Qwen3.6 35B A3B

by Qwen

Coming soon · price at launch
Context
256K
Input / 1M
$0.10
Output / 1M
$0.95

Better overall

Claude Opus 5.5

Grade 99.5 vs —

Cheaper

Qwen3.6 35B A3B

96% less, $0.31 vs $8.00 blended

Larger context

Claude Opus 5.5

1M vs 256K tokens

SWE-Bench Pro

Claude Opus 5.5

89.9% vs 49.5%

Head to head

Public benchmarks. Longer is better; each value links to its source.

LMArena TextElo-style rating · LMArena (CC BY 4.0) · Oct 13, 2026
Claude Opus 5.5Claude Opus 5.5: 1,508
Qwen3.6 35B A3BQwen3.6 35B A3B: —
LMArena WebDevElo-style rating · LMArena (CC BY 4.0) · Oct 13, 2026
Claude Opus 5.5Claude Opus 5.5: 1,811
Qwen3.6 35B A3BQwen3.6 35B A3B: —
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 13, 2026
Claude Opus 5.5Claude Opus 5.5: 1,545
Qwen3.6 35B A3BQwen3.6 35B A3B: —
SWE-bench Verified% of issues resolved · SWE-bench · Apr 15, 2026 · reference
Claude Opus 5.5Claude Opus 5.5: —
SWE-Bench Pro% of tasks resolved · Scale AI SWE-Bench Pro · Sep 22, 2026 · reference
Terminal-Bench 4.0% of tasks passed · Terminal-Bench · Sep 22, 2026 · reference
Qwen3.6 35B A3BQwen3.6 35B A3B: —
Terminal-Bench 2.0% of tasks passed · Terminal-Bench · Apr 15, 2026 · reference
Claude Opus 5.5Claude Opus 5.5: —
LiveCodeBenchpass@1, % · LiveCodeBench · Apr 15, 2026 · reference
Claude Opus 5.5Claude Opus 5.5: —

Claude Opus 5.5Qwen3.6 35B A3Bv = reported by the model’s maker. — = no public score yet. Arena bars span the range across every model we grade.

What it costs you

Drag to match your monthly usage.

Claude Opus 5.5$1,600 /month
Qwen3.6 35B A3B$58.00 /month

Qwen3.6 35B A3B saves you $1,542 a month at this usage, $18,504 a year.

At a glance

AttributeClaude Opus 5.5Qwen3.6 35B A3B
Made byAnthropicQwen
AvailabilityComing soonComing soon
Overall gradeExcellent · 99.5Not rated
Overall rank#1 of 67Not ranked
Input price$4.00 per 1M$0.10 per 1M
Output price$20.00 per 1M$0.95 per 1M
Context window1,000,000 tokens262,144 tokens
Reasoning levelsYesYes
Reads imagesYesYes
Model IDclaude-opus-5-5qwen3.6-35b-a3b

Try both with one key

Same endpoint, same key, both hosted in the USA. Change one word to switch models, in Claude Code, Cursor, Cline or your own code.

Get your API key
# Ask either model the same thing
curl https://fullsendai.com/v1/chat/completions \
  -H "Authorization: Bearer $FULLSEND_API_KEY" \
  -d '{"model": "claude-opus-5-5", "messages": [...]}'

# …then swap one word
  -d '{"model": "qwen3.6-35b-a3b", "messages": [...]}'

Questions

Is Claude Opus 5.5 or Qwen3.6 35B A3B better?

One of them doesn’t have enough public benchmark scores to be graded yet; compare the benchmarks both have above.

Which is cheaper, Claude Opus 5.5 or Qwen3.6 35B A3B?

Qwen3.6 35B A3B: $0.10 in and $0.95 out per million tokens, against $4.00 and $20.00 through FullsendAI.

Which has the larger context window?

Claude Opus 5.5, with 1,000,000 tokens.

Can I use both with one API key?

Yes, once they launch: both are coming soon, at the prices shown, and both will use the same FullsendAI key.

Model rankingsAll benchmarksCompare other models

Scores: LMArena (CC BY 4.0), SWE-bench, Scale AI SWE-Bench Pro, Terminal-Bench, LiveCodeBench, and model makers’ published results where marked v. Prices are FullsendAI’s, per million tokens. Data as of Oct 28, 2026.