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Grok Code Fast 1 vs TTS-1

Both have similar output pricing, while Grok Code Fast 1 offers a larger context window. Choose Grok Code Fast 1 or TTS-1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecGrok Code Fast 1TTS-1
ProviderOpenCodeVercel AI Gateway
Input / 1M tokens$0.00—
Output / 1M tokens$0.00—
Context window256K0
Parameters——
Open weightsNoNo
ReleasedSep 2025Nov 2023
LMArena WebDev Elo score1166—

FAQ

Is Grok Code Fast 1 or TTS-1 cheaper?

Grok Code Fast 1 and TTS-1 have comparable output pricing.

Which has the larger context window, Grok Code Fast 1 or TTS-1?

Grok Code Fast 1 has the larger context window (256K tokens).

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.