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Claude Fable 5 vs MiniMax M3

Claude Fable 5 grades higher overall (90.7 against 69.6). MiniMax M3 costs 98% less for the same work.

Claude Fable 5

by Anthropic · #3 of 67 overall

Coming soon · price at launch
Context
1M
Input / 1M
$10.00
Output / 1M
$50.00

MiniMax M3

by MiniMax · #30 of 67 overall

Coming soon · price at launch
Context
512K
Input / 1M
$0.28
Output / 1M
$1.10

Better overall

Claude Fable 5

Grade 90.7 vs 69.6

Cheaper

MiniMax M3

98% less, $0.48 vs $20.00 blended

Larger context

Claude Fable 5

1M vs 512K tokens

SWE-bench Verified

Claude Fable 5

95% vs 80.5%

Head to head

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

LMArena TextElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
LMArena WebDevElo-style rating · LMArena (CC BY 4.0) · Oct 13, 2026
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
SWE-bench Verified% of issues resolved · SWE-bench · Jun 9, 2026 · reference
SWE-Bench Pro% of tasks resolved · Scale AI SWE-Bench Pro · Jun 9, 2026 · reference
Claude Fable 5Claude Fable 5: 80%v
Terminal-Bench 2.1% of tasks passed · Terminal-Bench · Jun 9, 2026 · reference

Claude Fable 5MiniMax M3v = 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 Fable 5$4,000 /month
MiniMax M3$100 /month

MiniMax M3 saves you $3,900 a month at this usage, $46,800 a year.

At a glance

AttributeClaude Fable 5MiniMax M3
Made byAnthropicMiniMax
AvailabilityComing soonComing soon
Overall gradeExcellent · 90.7Strong · 69.6
Overall rank#3 of 67#30 of 67
Input price$10.00 per 1M$0.28 per 1M
Output price$50.00 per 1M$1.10 per 1M
Context window1,000,000 tokens524,288 tokens
Reasoning levelsYesNo
Reads imagesYesYes
Model IDclaude-fable-5minimax-m3

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-fable-5", "messages": [...]}'

# …then swap one word
  -d '{"model": "minimax-m3", "messages": [...]}'

Questions

Is Claude Fable 5 or MiniMax M3 better?

Claude Fable 5 grades 90.7 against 69.6 for MiniMax M3, from public benchmarks.

Which is cheaper, Claude Fable 5 or MiniMax M3?

MiniMax M3: $0.28 in and $1.10 out per million tokens, against $10.00 and $50.00 through FullsendAI.

Which has the larger context window?

Claude Fable 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, and model makers’ published results where marked v. Prices are FullsendAI’s, per million tokens. Data as of Oct 28, 2026.