Claude Fable 5.2 vs Gemini 4 Carbon: head-to-head AI benchmark comparison. Gemini 4 Carbon leads on output speed, time to first token, output price and input price; Claude Fable 5.2 leads on intelligence index.
Claude Fable 5.2 (Max, Default Fallback) vs Gemini 4 Carbon (High) benchmark comparison
Claude Fable 5.2 (Max, Default Fallback) vs Gemini 4 Carbon (High) scores 64.6 and 60 on the captured intelligence index. Compare token rates and response timing.
Pick it for Claude Fable 5.2 · Max, Default Fallback
Test Fable on tasks where the higher aggregate score may matter.
Pick it for Gemini 4 Carbon · High
Test Carbon on requests sensitive to the initial wait and token cost.
By the numbers
These figures describe the two model configurations shown here. A dash means the source snapshot had no usable figure for that metric. Scores, speed and API pricing may change as providers update models.
Fable scores 64.6 on the captured index and lists $8 input and $40 output per million tokens. Carbon scores 60 at $4 and $20. Carbon reached its first token sooner and emitted more tokens per second in this capture.
What to measure on your workload
Compare the same accepted answers rather than treating the index as a price-adjusted ranking. For a streamed workflow, record when useful text first arrives as well as the time to complete the answer.
Questions about Claude Fable 5.2 and Gemini 4 Carbon
How long does each variant take to start responding?
The captured time to first token is 253.38 seconds for Claude Fable 5.2 (Max, Default Fallback) and 99.5 seconds for Gemini 4 Carbon (High).
What is the measured output speed?
Captured output throughput is 94.67 tokens per second for Claude Fable 5.2 (Max, Default Fallback) and 99.54 tokens per second for Gemini 4 Carbon (High).
What release dates does the benchmark record list?
Claude Fable 5.2 has a recorded release date of 2026-11-09. Gemini 4 Carbon has a recorded release date of 2026-10-28.
Final whistle
Fable scores 64.6 on the captured index and lists $8 input and $40 output per million tokens. Carbon scores 60 at $4 and $20. Carbon reached its first token sooner and emitted more tokens per second in this capture.
Where the numbers come from
The scores, speed and prices in this comparison come from independent third-party model evaluations that Franklin AI syncs each day, and the article was written from a snapshot of them. For the latest results, open the Claude Fable 5.2 (Max, Default Fallback) and Gemini 4 Carbon (High) pages. The AI Benchmark methodology explains how that data is collected and shown.
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