Unverified50% confidenceFactExact time
When migrating from Gemini 3.1 Pro to Argon, requests ending with a model turn (prefill assistant reply) return an HTTP 400 error, whereas 3.1 Pro accepts them.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/16/2026
First Seen
Valid until: 1/14/2027
Sources
Related Entities
Related Claims
UnverifiedGemini 4 Argon returns a 400 error if the output limit exceeds 65,536.72% similarPartially VerifiedBy default, Gemini 4 Argon's output limit for synchronous requests is 65,536 tokens, and exceeding it returns a 400 error; to generate an output close to 1 million tokens, you must set background: true via the Interactions API and raise max_output_tokens, while also requiring store=true because background interactions rely on persistence.71% similarUnverifiedIn the SQLite connection stability fix task, Gemini 4 Argon generated a 1200-line PR (the correct solution required only about 21-30 lines), took 30 minutes, had non-compliant formatting and failed lint, and was ultimately confirmed invalid and closed after review by Opus 5.5.70% similarUnverifiedGemini 4 Argon automatically enables caching when the prompt reaches 4,096 tokens.68% similarUnverifiedGemini 4 Argon only supports implicit caching, not explicit caching; cached input is $0.10 per million tokens before November 30, and $0.20 afterward.67% similar
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