GPT-3.5 Turbo vs Qwen3 235B A22B vs Grok 4.20
GPT-3.5 Turbo at $0.575 in and $1.73 out, Qwen3 235B A22B at $0.523 in and $2.09 out, and Grok 4.20 at $1.44 in and $2.88 out — per million tokens, from the same wallet.
GPT-3.5 Turbo
OpenAI
0.43¢
for a client proposal
$0.575 in · $1.73 out / 1M
16K context · released May 2023
Qwen3 235B A22B
Qwen
0.43¢
for a client proposal
$0.523 in · $2.09 out / 1M
131K context · released April 2025
Grok 4.20
xAI
0.95¢
for a client proposal
$1.44 in · $2.88 out / 1M
2M context · released 4 months ago
Asking all three at once — identical prompt, identical context — costs about 1.8¢ for a typical client proposal.
At a glance
- Cheapest input: Qwen3 235B A22B at $0.523 per million tokens.
- Cheapest output: GPT-3.5 Turbo at $1.73 per million tokens.
- Largest context: Grok 4.20 at 2M tokens — about 2,900 pages.
Cost per task
Estimated totals at the rates above. Solid bar is input, lighter bar is output.
Quick code fix
2K in · 500 outDraft a client proposal from notes
5K in · 800 outContext-heavy session (Alyph workspace)
155K in · 4K outAnalyze a 50-page legal contract
35K in · 1K outLarge architecture refactor
250K in · 3K outLong-context rate applied at this input size.
Solid part of each bar is input tokens, the lighter part is output. Models that don’t fit a task are marked instead of priced.
Cost vs Token Amount
Drag the slider to adjust the split between input and output workload.
Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.
Pricing
Specs
Try it with real numbers
2K tokens in · 500 tokens out.
All 3, same prompt and context: 0.84¢. That is the entire cost of the comparison.
Your $5 welcome credit covers about 593 of these.
Which should you pick?
For long documents, Grok 4.20 has the largest context window here — 2M tokens.
On price, GPT-3.5 Turbo is the cheapest of the three on a typical task, at about 0.43¢.
For images or files, Grok 4.20 can read them directly; GPT-3.5 Turbo and Qwen3 235B A22B are text-only.
If you want to watch the model think, Qwen3 235B A22B and Grok 4.20 show reasoning; the other answers directly.
Or don’t pick. Send the identical prompt to all three, read the answers side by side, and keep the winner. How to run a fair bake-off →
Questions, answered
Which is cheapest — GPT-3.5 Turbo, Qwen3 235B A22B, or Grok 4.20?
Which has the largest context window?
Can I run GPT-3.5 Turbo, Qwen3 235B A22B, and Grok 4.20 side by side on Alyph?
Ask all three at once
Identical prompt, identical context, answers side by side — about 1.8¢ for a typical client proposal. Free to start, with $5 of credit.